Baby doesn’t sleep well in bassinet..

My baby girl is now 2 months old and I can’t get her to sleep in the bassinet for no more than a hour a night. I breastfeed her at night and she will just fall asleep next to me in bed and will sleep 3-4 hours at a time if I leave her there right next to me. I LOVE having her sleep next to me which I think too is making our situation worse. I know she is supposed to go in the bassinet for her safety, but having her sleep next to me is the only way we both have been getting good sleep at night. I’m considering getting a co-sleeping bed for her so she can still be next to me but safely. My fiancé is upset that I let her sleep in the bed because he knows it’s unsafe for her but at the same time he says he loves having her in the bed too... I’m just so torn on what to do for her.