Fwb or boyfriend material?

Jean

Okay so about 3 months ago my ex's best friend moved in as a roommate. About 2 months now we have been in a no strings attached FWB type of relationship. Here's the thing. So we have sex basically every 2-3 days and he sleeps in my bed every night. Not that astrology signs really mean a lot but he's an Aries and I'm an Aquarian Pisces. He wears his heart on his sleeve while I take forever for my emotions to even register for me. We have been having all sorts of conversations about relationships and we are so so close all the time just being comfortable around each other. He's been screwed over by his ex's and he already has 4 kids that he can't see. I have 2 children myself whom he is amazingly wonderful to. Should we pursue a relationship? We both want no strings attached but are also completely open to an open relationship. We are just tired of the drama most relations bring at this point in life. Neither of us are looking for the other to marry we aren't that type we just want companionship and the amazing sex is a bonus. As an outside perspective do you think we should actually pursue each other or just keep it as a FWB relationship?

Edit: so when he comes home or leaves the house he makes sure to tell me where he's going and what he's doing and kisses me. I don't ask I know he's his own person and he makes his own choices. But since we have been FWB he hasn't been talking to other females in the same way. I still am And he knows that too. I was wondering if you guys think he actually has more feelings for me or if I'm just reading the situation wrong. I don't get the butterflies or excitement when he's around I just really enjoy his company and he actually listens. I have never been around any man that actually hangs on to my every word.when we do talk about a future together in a relationship we both basically say if it comes to that bridge then we will cross it.