What do I do..

I’ve been with my bf for three years now and I noticed after a year being together he would lie about the silliest of things. I never understood why and it never made sense to me. For instance when we first started dating about 6 months in he told me his family “approves” of my daughter and when I brought up my daughter they were all surprised and looked at my bf. Once he told me he was going to nap I get home he’s not there but we have the ring so he gets the notification and right away FaceTime me that he’s at the gym. Why not tell me??? This has happened a couple of times.. We recently moved in together and I’ve caught him in so many lies. I don’t know what to do anymore, he told me yesterday he was going to his moms, ok great! Have fun babe, enjoy family time. About 40 mins later his mom text me asking when can we stop by because she has gifts for the kids (mind you, she lives 15 min away from us) my heart dropped.. what could he be doing???!! It’s 6 o’clock and I feel so defeated, I get in my car and drive to the places where I’d think he’d be.. guess where I find him? Eating with his friends. He didn’t see me but I saw them inside a burger joint and his car outside. He lies so so SO much and why??? Why???

I waited till he got home and asked him why the fuck do you keep lying to me??? He looked so confused and I told him where I saw him he apologized and just said he doesn’t want to argue. This has ALWAYS been his excuse “I don’t want us arguing” and every time I catch him in the dumbest lies I always explain it’s way worse lying to me because I question his every move and it’s not fair!!! I told him “think about it what I’m going to do break up with you because you’re with your friends?????!!!!” He really couldn’t tell me he was going to eat with his friends???? Idk what to do ladies, he lies about almost everything and I’ve tried having talks with him as to why he feels the need to lie and he never has answers or his famous “I don’t want to argue”

I’m stuck.

He’s 27 I’m 26 we have two kids and I don’t want to deal with these lies anymore but another part of me thinks “omg just stop we DONT have to go through this”

I’m sorry ladies I’m just everywhere