Link had legitimate love interests in 3 games, AoL, TP and SS.
OoT and the Oracles don't count because he had literally no interest in most of his possible beaus. Even as an adult, he still seemed to be stuck partially in the Cootie Mindset of a child and looked horrified at the very idea of being permanently stuck in a relationship with the demanding, spoiled pain in the ass princess ruto. Plus getting involved with an actual tree has er...unfortunate complications involving splinters.
Ocarina of Time/Majora's Mask
Jesus Christ nobody really cares about the Historia anymore do they
"Midna began searching for a way to oppose Zant. Just then, a human appeared who had been transformed into a beast by the Twilight. It was none other than Link, a young man from Ordon Village in whose veins flowed
flowed the blood of the Hero of Time."
Now, they could have just said something like "Blood of the Knights of Hyrule" if they wanted to specify that he was definitely destined to be a hero, but no, they said from the get go that he had the blood of the Hero of Time, meaning that the Hero of Time definitely knocked a girl up at some point. In MM, Link and Zelda definitely have feelings based on the way she talked to Link before he left in the cutscene, talking about how they'll never forget the time they spent together.
The Oracles
Oh yeah, he definitely looks horrified... Maybe he looked horrified because he doesn't want to **** a tree?
Wind Waker/Phantom Hourglass
In WW, when Link is asked by Beedle about a "pirate girl" that came and sold him some bombs, Link began blushing. This is also touched upon again in PH, where Link and Tetra almost hold hands before Bellum snatches her away.
Spirit Tracks
If you can't notice the sparks flying in Spirit Tracks, then you have a heart of stone. Link gasps upon seeing Zelda for the first time (most likely at her beauty) and when they defeat Byrne on the Tower of Spirits, Link and Zelda share a bonding moment where they high five each other saying nobody can defeat them when they combine their power. If you still can't take that as evidence of the sparks in Spirit Tracks, try this on for size:
Ah, young, undeniable love. Does the heart good, yknow?
A Link to the Past (and partly A Link Between Worlds)
Oh, that princess... She's quite an interesting one, let me tell you. You wanna hear something juicy? When we reach a certain age, even the princess comes to a point where she has love on her mind, right...? [Of course!] OK, WELL... You didn't hear it from me, but every night the princess goes on a little excursion inside the castle. Her maids say that she's secretly meeting someone. Apparently, she's not very good at the "secretly" part. So, one night, someone gave in to the delicious temptation of curiosity and decided to follow the princess... And guess what happened! [What happened?] The princess stopped in front of a large painting on display in the center of the castle. And she stood there just staring up at the painting for 10 minutes. And then went back to her room. Just like that! So when the person following her went to inspect the painting... You'll never guess what happened! That painting...? [What?] This painting was of a hero and princess from several generations ago cuddling in one another's arms... This person following her--it wasn't me, I swear--continued to follow her every night! Creepy. And it was the same thing every time! Princess Zelda would just stare at the picture night after night... Not a very exciting end, I suppose. Maybe that's not so juicy after all. Oh well. They can't all be overripe fruit! The painting brought out a look of such admiration that had never been seen before in the princess. Now you've heard it. Go on, now. That gossip ain't gonna spread itself!" — Rumor Guy
Interviews with Developers
Interviewer: We have received several emails in which our readers ask: Will Zelda and Link ever be involved [romantically]? [laughs] I'm sorry, but we had to ask.
Aonuma: [laughs] Good question. Well, as you already know, we are now dealing with a teenage Link, and as you know, teenagers are very emotional beings, so there are definitely possibilities of seeing Link showing his feelings towards the princess. But honestly, we don’t know what the future holds.
In another interview Mr. Aonuma answers another question about this relationship in Twilight Princess.
Interviewer: Will we see a charming and affectionate romance [between Link and] the princess?
Aonuma: Well, we're creating an adolescent storyline and we try to present it how it should be; in fact, if you played it – or will play it – you’ll notice that the way Link holds the sword is much cooler than how he used to do it. Link will now do things in a way that will make him look more confident and liberated. And yes, it's true that teenagers have these relationships -- and we would love if it could happen with the princess – but I can't talk about anything yet.
A question from an old interview with Shigeru Miyamoto, conducted by Famimaga 64:
Interviewer: Does Link have a girlfriend?
Miyamoto: If it was Princess Zelda, it would be great. However, this time Navi [the fairy] is jealous of Zelda. So within the story, Navi feels something for Link.
More recently, Eiji Aonuma stated in a Nintendo Power interview:
After the time warp, when Link wakes up seven years later, he's extremely concerned about what has become of Zelda. If he found out right away, that wouldn't be very interesting, but if he didn't know until the very end, and then he learned that she'd been captured by Ganon all that time, that would be even worse.
And lastly, in the video documentary titled "The History of Zelda", Miyamoto comments:
Ocarina was fun, and it also was Zelda-like...the story's a little romantic, though, which is not very Zelda-like.
Conclusion:
Link likes pussy