HELP! I've fallen out with my boyfriends mother and I think he's going to leave me because of it

So I've been with my boyfriend for 2 years and 4 months, we've been on and off since we were 15 and started a serious relationship when we were 18. There is a lot of history behind everything but to cut a long story short he cheated on me a few times in our younger years. I forgave the cheating from our younger relationships as we were very young and were not what I would call a serious adult relationship as we are now.

He was my first kiss and first everything right through to loosing my virginity, however I am not this for him. Anyway we were seeing each other for about 5 months before we decided to make it official in the September of 2015, and i was so happy all I had ever wanted was for our relationship to be something and it finally was. He spent the evening at my grandparents that Christmas and met my whole family, they loved him and welcomed him with open arms and he's became a massive part of our family.

6 month after we got together he finally admitted to me that in the 5 months when we were seeing each other he slept with another girl and also kissed one of his old flames. I was devastated as I thought that we were exclusively seeing each other during that time, as we were doing sexual things and he knew I hadn't done those things before and wouldn't do them with someone if he was messing around with others. It was extremely hard for me to forgive him for this but I did as I wanted to try and give us a chance. We moved on from it and I gave him one last chance, obviously with terms and conditions and I can honestly say he turned it all around.

My boyfriend treats me like a princess and I honestly couldn't ask for anything more than what he gives me.

The first year I celebrated my boyfriends birthday with him, his friends and family I felt so welcomed his mum snapped photos of us all night and made me feels so welcome. However this all changed as we started to get closer she started to get very territorial over my boyfriend. He would be at my house and I'd see messages from her like "you need to come home I miss you", "when are you coming home, next year" she would phone him and say he needs to come home and cook and clean honestly anything to get him alway from me. I opened up to him about how I found this a little bit too much and annoying and he said he understood.

Gradually it got worse in the summer of 2016 she went out to a party and hurt her foot, she went to the hospital they x rayed it and they said it's just a sprain use the RICE method and it will clear up. One month later she's still at home in bed "unable" to walk, make her self some lunch, get her clothes etc. Basically she milked it for all it was worth he barely saw me and she would make him stay home and be her personal slave, he even told me he was fed up with this. One day we I met him in town as he wanted me to help him with something at the bank so I went down and met him whilst his mother was looking around the shops with her friend, he then said he's like to come back to mine as he had t seen me in a long time. I obviously said yes happy to finally spend some time with him, he phoned her and asked her if she needed him to drop the bags home as we would've been driving past to get to my house, she said no she didn't need his help she was with her friend and she would drop her home with the bags. When we arrived back to mine he received a phone call from his mother she was shouting and screaming down the phone I could hear her saying " you've really pissed me off! Your always with her", now obviously from hearing that I'm going to think that she's mad at me and has an issue with me. I explained the way I was feeling to my boyfriend and he again understood and said she was out of line.

Things continued to be sour from her end never being rude to my face just making me feel unwelcome and not included. Me and my boyfriend continued to from closer and he opened up to me about a lot of personal things in his life. He told me that he was not legal in the country so me, my mother and father paid for him to see a solicitor for him to get his citizenship, we told him we didn't want the money back it was from the goodness of our hearts as he is a lovely boy who is very clever wth good grades who deserves a chance in life. His mother still to this day hasn't even said thank you. While all this was going on I found out I was pregnant and due to the circumstances with my boyfriend we decided not to keep the baby as things were very uncertain in our lives at the moment. This was extremely hard and not what we really wanted to do. He was there for me every step of the way.

His mother however said some very cruel things, she didn't ask him if he was okay, she said to him "your not the only one to go through this so stop crying and moping around". The week after the abortion she invited his sister up with his nephew and said he needed to stop spending time at mine and we need to get over it, she didn't even allow him to let us sort ourselves out together. She then called me controlling and said I'm pulling him away from his family.

I asked his mother to meet and to speak thorough our issues as I was extremely hurt by how she has treated me however she ignores me more than once. She said she had no issue with me yet wouldn't calling me controlling be an issue? She has said and done many more things but I can't talk about them all as there too much to say.

On New Year's Day this year I posted this image

Yes I do understand now that maybe I should have left it but by this point I am so unhappy and fed up of being treated and spoken about like rubbish that I snapped. This was the only thing that I have said about her other than telling my boyfriend. The sister and his mother went crazy phoning me saying that I want attention and that me and my family did what he did for my boyfriend so that I can throw it back in their face.

I tried speaking to my boyfriend and he told me it was over and that he still loved me and didn't want to end it but this would now not work. He then changed his mind and said to me he wouldn't end it and he was going to sort it out that was the last thing he said to me before I dropped him home. This is all I've heard from him since I dropped him home on Monday night

His sister has sent me horrible messages

What do I do I haven't responded to those last messages and do not plan to. I'm just so hurt, and I do not want to loose him. The reason why I added the story of him cheating in the beginning was to show he has hurt me before but I have forgiven as I love him more than anything but he cannot seem to do the same for me.

P.s. Please do not send abuse about the abortion. Ive been brutally honest and I don't need nasty opinions regarding my choices, just help with the situation at hand