Pices girl Sagittarius boy

I've been dating my Sag for 8 months now.
We started off very casual, we both had other ppl on the side...until we got jealous of each other. we both realized at the same time that we liked each other more than just hookups and wanted each other all to ourselves. we're VERY attracted to each other, he loves to please me in bed. I've heard that if this attraction fades, a Sag/Pices relationship will fade fast, but we have so much more in common

We both are very goofy, talk about nonsense all the time, I feel like a little kid around him.

Here's the bad things...we're both very jealous of each other, that's what ALL of our fights are about. he's had a very sexual past...50+ partners. I've had my fair share too...11, but it doesn't compare to him. When he drinks, he turns into a whole different person and hits on everything that moves. The next morning after an incident he says he blacked out from drinking and doesn't remember a thing and then cries to get me back. I almost think he is bipolar, he has such ever changing moods. It drives me INSANE. However, I keep on taking him back and that is very unlike me.

before my Sag, I have always been independent and have been the one to break up with all my former boyfriends...I'd mope for about a month or so and then move on. No one has been able to keep me interested like this Sag. I must say the attraction is big but I can tell it goes so much deeper than that. I honestly love him so much, I can't imagine loving anyone more. So it's very frustrating, being so in love but also putting myself down for putting up with his mistakes and clingy characteristics.

Wondering if it will last...sometimes I hope it doesn't...other time i can see myself marrying him