don’t know what to do

my boyfriend went to his best friends house yesterday (a girl) and didn’t talk to me till 6pm only to ask me if i’m okay and to leave me on delivered till now 1pm next day) I know that he’s around cause he told me last week another friend(a girl) is coming to his house today that’s why i couldn’t go to his house today or yesterday. We had sex 2 weeks ago and i’m afraid he’s going to cheat again ( he kissed another girl earlier this year but i forgave him cause i kissed another guy too and i honestly wasn’t taking our relationship seriously)