Search Results: ex boyfriend cheated on me

My my first boyfriend cheated on me 3 years back ! and things were really really bad for me... but I ended up dating again but still couldn’t resolve my trust issues so I had to break up with my other relationships as well !
Nevertheless for the past 3 years my ex tried to contact me and he kept on saying he regrets hurting me and that he can’t move on because he still loves me... after 6 months of telling him to “leave me alone” I decided to talk to him, we spoke and went on few dates and we actually had a weird ex with benefits sort of a thing yes heat and chemistry was amazing !

Current situation: yesterday he went for a football match and he called me several times literally begging me to come to where he was, but since he was my ex (his friends/ my friends were there and they don’t know that we see each other) and since he was drunk I decided to not to go by giving fake excuses... he got super disappointed and then told me to stop talking to him. Today I called him and he cut the line and replied saying he was serious about telling me to stop talking to him. I apologize for not showing up and I asked him I did something else wrong but all he tells me is... chill chill or no you didn’t do anything wrong. And then he said he will call me but it has been 24hours and he still haven’t called me to tell me why he wanted me to stop talking to him just like that... any thoughts?

P. s He told me he didn’t have feelings for me and that he was finally able to move on! And knowing all that I decided to go and meet him because I wanted to stop hating him after what he did. And actually I did stop dating him... but now again I’m confused upon what he did..

So I've been with my boyfriend for 2 years now
We stay at each others places
He stays at mine
I stay at his

Yesterday, he slept over
He was in the shower and his phone was on the bed
His phone pinged
And I thought it might be his family contacting him.. but it was a message from his ex fling
Saying
"What you doing babe?"

I was FURIOUS!
I confronted him about it and he denied that theyre talking and she just messaged out of no where

So he unlocked his phone and showed me the message
And it was only 1 message from her
No replies from him

I dont know what to believe

Why would a woman out of nowhere just text her ex fling?

The girl is the 2nd picture
she's unattractive

Why would he cheat ON me with her?