His voice turns me on

So I know this guy we've been talking for 4 months now and he told me he loves me 3 weeks ago but recently I started feeling attracted to him his voice drives me craaaaaaaazy his voice is so deep and I can't explain what that does to me yesterday he started kissing me over the phone and we ended up having a sex phone and today we did it again and I feel so bad about it oh and I forgot to mention that I knew him in social media app lol I know it's kinda strange but that's what happened and I feel so guilty and scared that I might end up loving him and I don't want that bcs I graduate next semester and I need to focus on my study more