When I had asked her about it, she told me that as he was her classmate, everyone assumed that they would get married. She tells me that it is all over for her and does not even think about him. But I don’t know why I still treat her with suspicion. Can I trust her?
You should trust her because she has honestly told you about her past. During college days, many have crushes on classmates but all do not spell marriage. And as you grow older, you outgrow such relationships. I am sure she must be now thinking what she had found appealing in him! She appears to be giving her marriage her best. So why are you so insecure about her and that too about her past? Stop being suspicious and treat her with respect. She is not in touch with her ex, so why are you behaving like an insecure psycho? Why are you hellbent on ruining your marriage? You need to chill and relax.