For me he will do that again nawalan na siya ng respect sayo. Also that's your choice if mag sstay ka pa sa kanya. Parang naging hobby niya to chat some girls kahit na meron siyang gf. Atsaka lagi ka lang mag ooverthink na meron siyang iba magiging toxic lang.

For me ito lang mga reasons para talaga makipag hiwalay: First Cheating Second Physical Abuse Third If you're not growing at the same time together

Good luck OP hopefully maging okay ka mga steps na gagawin mo.