It won’t fit!

I’m not a virgin. I’ve had sex quite a bit before. But I had a dry spell for about a year when I was single. I started dating this guy and we waited 3 months until we had sex. His penis is about average length, maybe a bit less, but his girth is ridiculous!!! We tried in like 5+ positions and it won’t fit. He used fingers to help out a little bit and still no results. I’m worried we won’t be able to have proper sex. I know all the tips like lube and relax and be on top, all the stuff I can find on google. But what can we do to have intimate bedtime fun if we can’t have traditional sex?