They befriend Techno to help them with their hunt and Techno is too awkward to point out he is the boyfriend when he figures out who it is, so he just kind of... tags along? Phil sees him with them one day and goes to say hi and Techno is just frantically shaking his head like no don't do it, it'll be so awkward.
Phil is laugh crying one day because Techno made him laugh so hard, but Wilbur or Tommy mishear it as just Phil crying when the boyfriend talks to him. The next day they grab Techno by the arm and announce that they’re going to beat the boyfriend into a bloody pulp.
Techno, internally like, “Oh no what did I do.”
Techno just stands there like, “Ah yes let's beat him up mhm. This seems like a good plan. Also what did he do????”
Techno, later, calling Phil like, “Phil why were you crying? Is it my fault? I'm so sorry. Why didn't you tell me???”
Phil, “Dude what the hell?”
Techno’s in, legitimate distress about this. He buys some flowers to apologize. Phil is confusion. It's still really sweet, especially when Techno will ramble on afterwards about the meanings of the flowers he picked out for Phil once he’s assured he didn’t do anything wrong.
Phil, taking Techno by the shoulders, “Listen, don't listen to those idiots, I'll tell you if I'm upset. Techno, they haven't figured out that you're the boyfriend. They're morons.”
Techno, “I know how are they so dumb I don't understand, I talk about you so much.”
Techno’s last conversation when trying to clue them in went something like, “My boyfriend, he’s blonde. You know him. He has blue eyes. He’s short.”
Wilbur and Tommy, squinting, “Doesn’t ring any bells to me.” and "Sounds like a weirdo. Anyways, think this other random person might be Phil's boyfriend?"
Techno desperately wants them to figure it out so he doesn't have to admit it. He starts describing the same date Phil mentioned them going on, but from his perspective. It doesn't work. In fact, it completely backfires and they think that Phil is cheating on his boyfriend with Techno.
They thinks it’s techno’s fault, so they try to prevent Phil from talking with Techno. Techno does not deal well with the stress of the people he thought were his new friends shunning and shaming him for something he didn't do
Phil sees how stressed and depressed Techno is getting because of his friend's antics, so he goes "Nope, you guys are coming with me to my boyfriend's next fencing competition." They come in to see Phil cheering on the winner, but he's wearing the mask and gear, so they can’t see his face. They then hear some of the other fencing team members call Phil the winner's boyfriend. This must be him! Phil approaches the mystery boyfriend after the match, only for voila, he removes the fencing mask and kisses Techno in front of everyone. Phil makes sure to sets them all straight afterwards.