^There was a vague, tentative attraction between Claire and her college roommate in the final season, but it was mostly subtext.
IIRC, there was confirmation that the Room Mate had feelings for Claire and was interested in girls. As far as Claire's feelings go, I'm pretty sure there was a Conversation or a kiss or maybe just a hand holding scene, that definitely pointed towards it being mutual (Been too long since I've watched Heroes, and not likely to rewatch it, though S4, IMHO, was a step back towards the Quality of Entertainment S1 had, and a big improvement over S2 and S3. Though maybe that was Robert Kneffer as the Antagonist that made S4 better
One Day I hope to be the Man my Cat thinks I am
Where are we going? And why are we in this Handbasket?