Is it bad to have Male friends???

Okay, so I have a friend at work. Well he's a he which is the problem. He asked me to lunch, then a couple weeks later to a movie. Well I no none of these are dates, I'm I'm no way untreated in him. I have my hubby (bf) of 4 years. Well anyways I finally told him we could have lunch/dinner one day. Well now I feel like I'm cheating. Oh my god, I talked to my boyfriend he said he ws cool with. If we had no intentions of dating and it wasn't weird ( like not texting him back, always happening, going to one another's houses doing multiple things at once etc movies, dinner then going somewhere else) but I feel like it's cheating still. I don't know why.