It sounds promising - since he is crying (which is out of character for him), he is being genuine. "He said he's not going anywhere," - is a very good way to put it. Much much better than "I won't cheat on you". If he is capable of saying it so simply - that he is not going anywhere - he means it. It is powerful, straightforward, direct language. Very nice.

So to the extent that you both seem to want to have a sexually exclusive marriage, you seem to be in accord and on the right track.

For you - stick to the idea that if it is going to happen, it will happen, and you will deal with it when it happens but not worry before it happens.

Don't work so hard on improving yourself - enjoy life, and you will improve yourself naturally without so much conscious effort.

Do not portray a strong person quite as much; let him know how you feel on the inside. At least a bit, OK? I am not saying that you should necessarily just go ahead and reveal all your vulnerability, but at least to try to stay a bit truer to yourself.

Do not try to shake away the memory; rather, try the opposite, paradoxical approach - think through this memory, relive it, replay it in your mind, etc. Build tolerance; desensitize yourself to the memory. Plus, anytime you decide not to think about purple flying monkeys, you will only think about purple flying monkeys non-stop, so you might as well decide to think about purple flying monkeys!