travis was a typical jock bully to liam, who was unable to hide his nerdiness or sexuality in high school. years later at a reunion they run into another, both single and travis apologizes, tells him he was jealous, etc. nowadays he's actually more comfortable in his sexuality - and actually had a huge crush on liam.
a few variants/interesting aspects! - their kids are going to the same school and they meet on the playground. - one encounter between them ended up with travis kissing liam and bolting off. - travis is still a virgin (and/or "straight"), liam isn't. - liam is travis's new boss or dm, or they meet at some kind of con. - they meet on world of warcraft or some kind of online game. - nix the bullying aspect, maybe the prom king and the nerd got together in high school and they're still together, now liam's trying to teach travis d&d.
and uhh - if its involved - i kinda love the idea of any d&d shenanigans getting sexy. liam playing an npc that travis's orc has the hots for and it kinda spilling over to realtime sexiness. maybe a lady npc if the orientation play variant tickled your pickle. i just want a lot of dirty talk, liam sweating over travis's big hands, maybe over the clothes or clothed male/naked male that occurs through character roleplay. and lots of very very bad naughty bad size difference kinks.