What will you do if your husband think you are sleeping with your best friend husband.

Godwin
My friend travel and won't be around till next month. Her husband called me if I have any food for dinner which my response was yes, and that I wasn't home at that moment, he also ask if my husband was home I replied with his at work. Before getting home my husband was home and I decided not to tell him because I think it really not a big deal. About 3 hours later he called that he had dinner in another friends house but his in front of my house and since am home and my husband car is outside he will just stop and say hi for 5 min and that was it. My husband said he always comes around when he is not home which is not so. His getting me irritated with his words. What do you think I should do.