Am I overreacting

So my husband and I have been arguing for the last 2 days. He doesn't think it's a big deal that he snaps another woman (her bf doesnt like it either) all the time and after out first argument he changed the lock code on his phone because I 'lost' the right to look though his phone. I find it disrespectful and the fact that he changed his code makes me uneasy. He thinks I'm overreacting, obviously I don't...