love life dilema

Im married and i have been with my husband for almost 4 years. Once we got marriage he changed w me. He became more stressed out, less caring and has been direspecting me by the way he speaks to me. At work there is this guy who is cute and talks to me all the time. He cares about me what I have to say. The other night when we were drinking he kissed me and i didnt push back we just made out. He has a girlfriend and i have a husband. What shoudl i do. He just tells em im gorgeous and that he likes everything about me. But i love my husband and i want to make things work but teh holidays were just spent argueying. Help please.