Garam has some serious trauma around "straight" guys and while Jaehyuk has been trying as of late to be a boyfriend to Garam, he has said a lot of homophobic things to Garam in the past and also had used him as a "human dildo". It doesn't surprise me Garam hasn't truly accepted Jaehyuk's affections or let down all his walls. But I do think Garam should communicate a bit better with where he's at emotionally, even if he doesn't go fully into why right now, just a little something so Jaehyuk can understand some of his boundaries.
Communication is key