Why does my husband not want to have ?

Me and my husband are in our late 20's almost 30's. My husband has stopped wanting to have . I am not fat and use to model. We have been married for 1 year and we have a 10 month old baby. I look the same now as I did before we had our baby. I don't have any marks or anything from the baby on my body and I am skinner than before I had our baby! I have two other men begging to sleep with me and want me to cheat on my husband. I do not understand why my husband doesn't want to have with me but other hot men do. At first he said it was because he was to tierd. He does have a stressfull job. Now the excuse is because we use condoms! He says he only likes and wants to have without condoms. We have been using foam as birth control this past week but I am afraid he will go back to not wanting with me. I don't know what to do and I am on the brink of cheating on him. I love my husband but I need more than once every 2 weeks! It just seems to always be one excus after another