I agree with what everyone has said. Intense connection and chemistry is great but that doesn't mean it will translate into long term success. Many things have to align for that to happen.
I read something in book once that essentially said that it is better if you don't have that intense connection immediately because if you do it can cloud your judgement which could cause you to make poor decisions (ignore red flags). That intense feeling is only one small facet of a R and once that ends there has to be something there to sustain you to the next level.
The flip side is that you do experience that feeling and it translates into a beautiful, fulfilling, life long relationship.
I guess in either scenario you just have to stay true to yourself, your beliefs, your values, and as everyone has said watch out for the red flags no matter what you are emotionally experiencing.
