My fiancé of 6 years done the worst thing possible to our family

I just need some support from anyone that's been through similar experiences.

I don't know how to start but my fiance and I are 19 years old.

we've been together since the start of high school. we were very close best friends for years before we decided to get together. we were 13 years of age when we started dating.

he is a very well mannered loyal down to earth person. he's always treated me right never had eyes for anyone else. Never watched porn this whole time and always had good morals especially when it came to relationships. I won't lie

though, we have had our fair share of hard times through the years.

but we always came back together stronger.

I fell pregnant with our first child at 16. A beautiful little girl who's now 2.

He's father is not apart of our lives because he has always tried to separate us due to his own unhappiness in his life. we decided it was too toxic to let it ruin us as a family so contact was limited.

One day his father met somebody and they planned a wedding pretty fast. he invited us to the wedding November last year. I was hesitant I had a bad feeling that something was going to happen. but I have the benefit of the doubt and went.

at this time I was 32 weeks pregnant with our son.

it ended so horrible my fiance totally neglected me and I was bullied and harassed by his whole drunken family the whole time. they pulled parts of my engine out to stop me from leaving and all this stuff. I was in a wreck and nobody cared. I was 2 hours away from my family. I had no one.

they finally put the parts back in my car and gave me shit about it threw alcohol all over my car etc. I left without my fiance as he wanted to stay and get drunk. he completely changed around them.

I took off to his mum's place with our daughter for a week until he finally chased me down there to make up with me.

we sorted it out after it almost ended our relationship.

anyways 9 months later my son is 4 months old and he comes out and tells me now that while I was away at his mother's, my aunty 46 years old who's a drug addict prostitute, came over to "see what was going on" she never has anything to do with us at all !

she bring drugs into my home and offered it to my fiance. we are so against drugs we hate the thought of it.

for some reason he attempted to take them but later tells me he wasn't affected by them as he didn't get it in his system.

well long story short he slept with her. the dirty hoe couldn't get dick for the night so she took the opportunity whilst I was gone and told him "this is our little secret".

he said it was eating him up inside he couldn't continue living like this no more he had to tell me as we were planning to be married end of this year.

he keeps saying he doesn't know why he did it he says it wasn't him and he would never go there.

he said he felt pressured because she's very controlling and being a postitue she knows how to get men where she wants them.

I don't know guys, it's eating me up inside he said been suicidal over what he's done and crystal about it all the time.

I just feel so shattered and betrayed I've known for just a little over a month now and I've tried pushing through it but I just can't seem to break free..

I love him so much and tried so hard to get to where I am now with my family...

I'm losing hope that it will ever be the same again... I always have mental images of my aunty on top of him and him getting off inside of her. it hurts so bad i can't escape this feeling.

I need advice and support I came from a broken family and i never wanted this for my children 💔

i feel like I'm stuck in one spot right now. I don't know how to get through this..

thanks for reading ..