I noticed DH had a text on his phone from an unknown number and I asked who it was from and he told me it was from a customer, he is taxi driver and they got chatting on a run. He didn't text her back and it was a harmless text.
I feel a little betrayed by this and I told him that it's disrespectful to be giving his number out to women that aren't friends. He promised that he was just being friendly and didn't know how to say no to giving his number out. He didn't realise that she probably thought he was interested in her. We talked it out but I feel guilty for being annoyed at this situation.