It’s very hard to put your emotions into someone else’s hands. I too have had these intrusive thoughts in relationships and it does nothing but bring yourself down, as you’re too busy focusing on the negatives rather than the positives. Just remember this man chose YOU to be his partner, no one else, so you must have a good and deep connection and he loves YOU for you! The fact he’s given you space doesn’t mean he doesn’t want you, it means he wants you to have time and figure yourself out, find out how you can help stop these thoughts from consuming your relationship. Have you told him about your insecurities? Discussing it with your partner would unburden you I think, or even seeking some sort of therapy to build your confidence!