Is it concerning that my boyfriend still wears a shirt his ex girlfriend bought him?

Anonymous
I've been dating my boyfriend for 8 months now. He dated his previous girlfriend for 5 years and the only reason they broke up was because he wanted kids and she did not. I recently asked him if he still owns anything she gave him and he told me she bought him a shirt years ago that he still actively wears to this day. It isn't a super nice shirt, which I would understand why someone would want to keep it... he told me it's literally a tshirt from a gift shop that says "Naples, Florida" on it from when she went there on a family vacation with her parents and bought it for him. Why would he still keep that shirt and actively wear it? It's not a "nice shirt" and it's not an "expensive item". He doesn't lack clothes or money to buy new clothes. He's clearly aware that shirt is from his ex.
Is it concerning that my boyfriend still wears a shirt his ex girlfriend bought him?
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