I agree with Anvil. But I'm kind of a prude. My husband is the only person I've ever been with so sex isn't JUST SEX for me. It means something to me and if it means anything other than "I love you so much and I'm so turned on by YOU!!!" then it shouldn't be happening. But that's just me and I already know that's not a popular opinion.
I don't think you did anything wrong or that you were weak. I think you're just seriously in need of affection and love and your hubby is where you normally turn to for that. Old habits die hard. I think it was about two weeks after my husband moved out I was calling him and flirting until I mentally slapped myself because I was sending the way wrong message. But he was being so nice and affectionate and it felt GOOD. We're all just human and want affection but we need to get it from a healthy, non manipulative source.