Don't know what to do... Need help / advice

Been in a relationship with a man since March 2022. He was so lovely in ways, still is but can be very bitter at times and selfish.

I would always help him in ways he would want me to and I'd ask him if I can do anything. Multiple times he'd accuse me of many things and tel his friends and get angry when they stick up for me.

On one occasion I fount out he asked a women for sex as I got told and when I asked him he broke up with me and said there is no trust so well leave it. I then done something stupid feeling hurt and broken I slept with someone and then after the 3 weeks he came begged told me he loves me and wants to marry me. ( often he'd say this while always trying to get me pregnant) I told him about me sleeping with someone even though I didn't cheat he called me the worst of the world and disgusting.

Months after... I had the keys to his place and I went there as he origanally told me go there but I did say I can't make it but then went anyway and caught a women in his bed. I got really angry

At the time and then fount out after him begging me back and saying sorry that since the beginning of the relationship it wasn't just one women it was many throughout. I broke up and left and was struggling with my self an living and couldn't cope I still loved him still do.

After 5 months we got back together and we have been good.

Monday he called me and was with a girl who he told me is a lesbian.

He didn't read my messages until Wednesday and that's when he reached me saying he had smoked weed and slept all day and night.

Saturday we agreed after I finish work close to midnight I would got collect the keys ( I don't have keys since getting back together) from his work and go to his until he finished work at 6 +am.

When I reached his work he told me sorry this girl is at my house sleeping she has my keys. So I pretended I was fine. He called the girl and she said for me to go there and she'll give me the keys. When I walked there she was gone and they door was open and keys on bed.

Today around 10 am the girl came to smoke with him... I don't smoke and they was laugthing and talking together and joining me in the convo at times I acted cool but in the back of my head I was thinking alsorts.

This lesbian girl was now talking about how she has dated these differant guys.

He said to me after she left he hopes I don't think anything and I explained to him if it was the other way around and a man was sleeping in my bed who was suppose to be gay but liked women also (bi) who u have known for two weeks and I told u to go there would u be happy.

He lives In a shared accommodation and his bedroom is in the front room as soon as you open the front door to a terraced house.

He has 3 children with a women who he sees but I've never met.

He tells me he loves me but we have never been out together and never dated only clubs in the past.

I do love him that's why am there but I don't know what to do or what to think.

He is 14 years older than me which i know doesn't mean anything.