That a lot of men expect a vast amount of emotional labour from their female partners, and so him "confiding in you" about all his issues (especially early on) is not a sign that he loves you, or that this relationship is special or important to him. It just means he expects you to do all the emotional work for him.
That you never have to pretend that the sex is OK if it isn't.
That you don't have to put your energy into holding his attention - there will never be enough effort in the world to keep him at your side if he doesn't find you fundamentally interesting just in yourself.
If you think you have a spark with someone, then you probably do. It doesn't mean anything is going to happen, it doesn't mean it's fate, it doesn't mean anything apart from itself - that there is a spark between you. So don't second guess yourself.
Time spent agonising about "what he is thinking" is always wasted. Spend that time thinking about yourself and what you want.