Cheating?!?! 😱 (updated)

I’m scared my boyfriend is loosing interest in me...and maybe even talking to someone else. He’s very on and off with the way he is around me, he will be all over me loving and shit then the next minute he will be dismissive and not showing me any love and he’s starting the show less and less love as the weeks go on. He talks to girls over Snapchat (his friends) and I don’t want to get shity with him about it because I talk to guys as well, they are just friends of mine. I have just been hurt before and I’m worried and he always reassures me he loves me when I bring it up but he’s always shity with me and I don’t want to lose him. What do I do? How do I go about it?

*update*

Okay so I confronted him last night, and turns out I was right. Not about the cheating but he doesn’t love me anymore and had been lying about still loving me for the past MONTH. He then left to go to his mums, came back home and slept in my bed (I was asleep and didn’t know he hopped into my bed, and I told him if he comes back that I want him to sleep in the spare room.) this morning he LEFT ME ALL DAY WHILE I WAS SUICIDAL to be home alone with no idea when he’ll be back (he left at 11am and it’s 8pm now.) Ngl think I’m just gonna lock all the doors and go to bed.

I went off at him over the phone like an hour ago.