Search Results: should i dump them

There’s this girl that works with my boyfriend
So a month ago, he told me about this girl. They were working together that day and he told me that she burst into tears out of nowhere and she told him that she got dumped.
He said to me:
“She got dumped by her boyfriend of 8 years for another girl. That’s fucked. She’s so nice”
So I found her facebook page on my boyfriends facebook list
She uploads a picture of herself and my boyfriend liked the picture
My boyfriend uploads pictures of himself at the gym and sometimes he has shirtless photos as well (on his facebook and Instagram)
He also uploads pictures of both of us together on his facebook and Instagram and his captions always mentions that im his “girl” , im his “lady” and im his “other half”
He put the pictures of himself on public and he also put the pictures of us on public too
I stalk his facebook and Instagram often so I see who likes his pictures. This girl would always like his selfie gym photos and the pictures of both of us
The other day, I was with my boyfriend but I went to a different shop. I came out and saw him talking to a girl. I came behind him and I heard the conversation:
Her – Hey.. I thought you were with your girlfriend today?
Him – Yeah I am with her. She’s here. Im trying to call her now.
I popped up behind him and then he introduced me to her:
Him – Hey, this is the girl I work with *points to her*
Her – Hey, nice to meet you
Me – Nice to meet you too
Her – He told me about your graduation. Congrats on graduating!
Me – Thank you!
And then we said goodbyes and left
Then he was like to me:
Him – That was the girl I was talking about. The one that got dumped by her boyfriend. She’s so nice
Me – Yeah seems like a nice girl
Do you think it seems like he likes her? and she likes him?
Or am I overthinking it?
If a guy is interested in someone else as well, would he still put pictures of him and his girlfriend up on his facebook and instagram and put them on public where everyone can see them?

So my boyfriend works with this girl
she's facebook friends with him and she follows him but my boyfriend doesn't follow her
My boyfriend said she told him that she got dumped by her boyfriend recently (a month ago)
He always tells me stuff thats going on at his workplace
Anyway, he takes selfies of himself at the gym (sometimes shirtless photos of him with his abs) and he uploads them on his fb and instagram and she always likes those pictures
And he also take pictures with me and he put the pictures of us on his facebook and instagram as well
And she likes those pictures as well (both on fb and insta)
Wtf?
Why does she keep liking my boyfriends pictures?
Does this mean she likes him?
Should I be worried?

So obviously there's a story behind this,
My mother is an alcoholic and drug addict, she has 2 other children and we all have different dad's, one is older then me and has asbergers and the other is younger then me and has fetal alcohol effects.

My dad has had full custody of me since i was around 6 but i was still allowed to see and stay at my mothers on every 2nd weekend and she has tried to give up alcohol and drugs multiple time but it never worked out, once i found her over dosed barley breathing, she got mad at me for calling an ambulance. After awhile she got with a man who she had a child. He raped and sexually abused me repeatedly for around 6 years. He went to jail for the assault and when he got out she got back with him even though it was against his bail conditions, he sent her money, supplied her with drugs and alcohol. Due to her relationship with him my younger brother got taken off her and she had to get sober and ditch this man to get him back, which she refused to. I went back to the police and told them about the rape, they weren't surprized because he'd done it before and he went back to court. She told me that she had dumped him and was trying to get better.

I found out a few month's later she was back with him and was seeing him almost every weekend, she had his spare house key and was messaging him a lot. I got angry and threw his key out and she kicked me out of her house so i told her i didn't want to see her again. This was 6 month's ago, not pnce has she tried to apologize or talk to me. Should i suck it up and forgive her or just keep things how they are?