Is it okay for me to date while i'm pregnant?

i am six months pregnant but is no longer with the father of my child. there is a guy i have been dating for three months but i always push back a little because i feel a little weird because i'm pregnant and its not his child. he always tell me he don't mind at all and tell me too relax. am i wrong to feel this way? he is a really nice guy he helps me out a lot during my pregnancy he's always trying to lift my spirit because i was so depressed. help me.