<human>: Can you succinctly summarize the text in 1-3 sentences?

Helped my boyfriend moved last weekend. I found old birthday cards from a girl in college kept together with all the cards (birthday, valentine's, love notes) from me to him. I was nosy so I read them. Seems like a normal birthday wish that anybody would write on a birthday card, except this girl attach a Tweety sticker with a pink heart and also wrote  "with love". Also found a knit scarf from her as well which he kept among his clothings in a box. I asked him about the scarf and he was honest that that is from her.

But I feel so bitter about everything because what happened a few months earlier when we had a hige fight because of her and we broke up for two weeks. Prior to this fight, I found out a conversation history between them. Apparently, that girl saw us at the mall so she asked my boyfriend about the girl he was with (which is me). My boyfriend didn't give straight answer to her that he has a girlfriend. Basically, he didn't tell her that he has a girlfriend back then, he quickly switched topic to something else. We had been together for a year at that time. My boyfriend told me that he has not been in touch with her since their graduation 4 years ago and what I found is that they chat like once a week.

I feel so bitter and sensitive about this girl especially since our huge fight. I wanted to throw away the cards and the scarf that he keeps but I had a second thought about it. I also want my boyfriend to come clean about the nature of his relationship with the girl and hide nothing. So do you guys think it is better to ask him to throw away the stuff from her? Thanks!
<bot>: Found old momentos from a girl in college while helping my boyfriend move. I feel bitter because my boyfriend ever denied having a girlfriend (me) to this girl before. Should I ask him to toss these things out?