Advice plz

Sooooo I have a friend that married and her hubby has been having affairs with other women behind her back ...So she found out and basically had sex with someone else ...ok fast forward ....soooo there’s this handsome , sexy ass guy came to my job and he was there for like a week or two .I have the biggest crush and I always gets nervous around him ...later to find out he had a crush on me the first day he got to my job ....he went out his way just to connect with me and wanted to communicate...So me being all excited I told my friends about him and she got super tight and was like that’s my man ...I’m like “dude u have a whole ass family at home “ why u worried about a single man that not even yours ....but low key I was playing but I found out that she fucked him to get back at her hubby ...She sent him a lot text messages saying how he trying to fuck her friends and blah blah ...I’m like ....well I’m single ..he single ...there’s shouldn’t be a problem but I did feel bad because of her situation ...soo he wanted to take me out on a official date but I’m kinda scare that I’m being a bad friend towards her ....should I go or not?