In a long relationship but connected with someone else??

I randomly met this other girl. I was in a parking lot leaving and so was she. We noticed each other and somehow started talking? There was an IMMEDIATE connection. Absolutely ridiculous. I swear I was comfortable enough to tell her everything about me. We spoke for over an hour, lol. Well, we exchanged numbers and it just seemed right. I've spoken to her on the phone and we both have agreed on the crazy way we met and connection we had. The day I met this other girl I immediately told my current gf I wanted to break up for several reasons. I didn't mention it was someone else I connected with, but we were a little rocky before this. She has made me feel bad for attempting to break it off with her and has reminded me of the positives and said she would change. I'm completely torn. I like my current gf, but she's just too controlling at times and I feel like I need a break. Although, I can't get my mind off of the other girl I just met. We literally have everything in common and I wouldn't hesitate to date her if I wasn't in this situation. My current gf is younger than me and the girl I met is 3 years older than I. She has been married, no kids. Here's the kicker. I personally think my current gf is more attractive. Although I can't get the other one out of my mind and I'm eager to be with her. I feel like 3rd party perspective would play a role and say: "why would you choose her over your ex?" I feel like sexually I may be turned off with certain attributes of the new girl, although they can be improved and she's working on it. (I may be slightly picky, but it is what it is) So...Is it worth it to stay with what I have and just ignore this other girl I met and I'm so curious about? Or is the fact that I'm curious about a new partner the result of my current relationship being over? Thanks for listening. Typing this has helped me.

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