Letting a guy down easily?

Roe

I’ve been talking to two guys from tinder (I’ve deleted the app ages ago and spoke to both of the exclusively) I’ve been talking to them for about four weeks because I really clicked with them ☺️

I’ve recently started dating one of them and we are now a couple since he asked me yesterday. The problem is that I am really close with the other guy, and we care about each other and have gotten really close. I don’t know how to tell him I’m dating someone else without hurting his feelings.

What can I say to him so we can still be friends? He thinks I’m still single at the moment and that there’s still a chance for us. I feel horrible but I really don’t know what to say.