Should I leave ?

hi! i am in a relationship with this guy- i have been with him for 11 months. during our *** 6 months i found out he lied abt playing pubg with his brother like mmm he wouldn’t respond at 12 and then call me at 5 to sleep- pretending like he accident fell asleep- i thought that was it- but then there was another incident abt a month ago where i figured out that he was talking to girls behind my back- even his ex- and i even found out he said he would get back with her but nah- i confronted him abt this and he said the ex thing was because he was being dumb but he was scared that i was gonna leave and just wanted to have friends just in case he gave them up for me- he kept a secret since the start of our relationship im pretty sure- he said he barely talked to them but this broke me, i didn’t know what to do. i gave him chances again after this. then a few days ago he lied again. i won’t say what- it was a very small lie like oh i didn’t do it when it’s clear he did. i honestly don’t know what to do, again with another chance but im just - yk? he said he felt overwhelmed that i would leave with over a lie so that’s why he lied and he thought i would get mad- i do have anger issues. anyway, i notice i think abt being with someone who didn’t lie to me, where i can find out cute stuff abt him rather than find out lies. idk what to do, i feel like conflicted i wanna stay i would rather stay but i always wanted a relationship where issues like these never happened- ik that’s probably unrealistic but yeah. idk to stay til he lies again or just leave now - i honestly don’t wanna leave but i want to at the same time- idk what to do.