The dust has long settled on the so-called Gospel of Jesus’ wife. I believe that had Christ been married, we wouldn’t have to wait until the fourth century for documentation on that. The New Testament gospels tell us a lot of things about His life ministry, much of which was ridiculous and/or ignominious to the original audience.
I’ve heard a few explanations for why Jesus was single, but the only ‘natural’ one I’ve heard is from David Instone-Brewer (‘natural’ as opposed to ‘spiritual’, e.g. He had a great mission to accomplish that excluded getting married). Listen to this interview (recorded some months back) in which Instone-Brewer touches on a number of issues, including why Jesus wasn’t married (towards the end). Does his explanation convince you?