Is this consider cheating?

My boyfriend is giving compliments on IMVU to other girls and I don’t know how to feel about this. This is recently like August 2nd. This is my first time going through his phone since we’ve been dating (8 months) he’s been through my phone plenty of times, he’s even turned off my IMessage notifications and texted my one and only guy friend in my phone. He doesn’t really like him because I was close with him during my 1st year of band camp 2017, I met my boyfriend of now in October 2018. So my guy friend was here before he was.

EDIT

Yesterday when he went through my phone after he texted my friend he deleted the conversation but I made my fiend send me the messages that my boyfriend sent to him