Am I driving my boyfriend away or am I right to feel this way?

Hi all I’m 23 boyfriend is 27.

so last week I found a girl on his old Facebook from last year. I saw she followed him on tick tock. And she’s from the city where he went the other day, the city is big but I just keep persuading myself what if he’s cheating on me with her since he went there the other day with his friends. I followed her on instagram and she messaged my boyfriend saying ‘Is it okay if I ask why you’re girlfriend is following me’ my boyfriend got pretty angry about it saying ‘why are u following someone who I know, it looks embarassing on me and looks like you don’t trust me and it’s causing drama for her’ he told me she’s literally 5 months pregnant with a baby girl and has a boyfriend and 2 sons. I started arguing with him saying ‘well why do you have her on social media’ he said ‘I’ve had her since last year and spoken before’ he said to me ‘feel free to call her and speak to her about me but she’s going to tell you the same thing, you’re embarrassing me acting very childish’ Am I in the wrong here? I just followed her because I was intrigued of who she was. I keep mentioning it and going on about it and I can’t help it. I called him this morning saying I’m going to ask her and he said ‘crack on’. Do I look stupid here. I don’t understand why he has her on social media and why she is bothered about me following her.

Am I driving my boyfriend away or am I right to feel this way?
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