Feel like garbage.

My boyfriend went to Florida for a friends wedding. Last night he sent me some texts asking me to send him nudes. In these texts, he said he's been disengaging the thought of a one night stand with a tourist or local. Is it right for me to feel like shit? At the same time, I both feel and have been told by my best friend, that I'm overreacting. Thoughts?

Edit: here's what he sent me. He later responded saying he had just gotten home from a bar with the groom and best man.