As someone who didn't lost their virginity until their late 20s, I can relate. I remember being afraid to tell a girl I had been on a few dates with. She finally asked me why I wasn't trying to have sex with her. I was like, "I need to tell you something I'm embarrassed about." She said, "What is it? Are you gay?"
Once I told her, she was great about it.
https://www.youtube.com/watch?time_continue=2&v=IZ_LpTNVI0M&feature=emb_logo