Guys are a bit mental. He thinks of you less of a challenge/value now that you have given it up even though having sex or not logically has nothing to do with a woman's value. That is why if you want a serious relationship with a guy, don't give it up until marriage. You would have to let this one go. Learn from it.
A strong woman takes advantage of help she can get from people around her but she doesn't rely on them for anything
She uses logic and manages her emotions
She offers help either because it is a business transaction or out of kindness. It is never because she hopes others will return the favour or out of fear of losing them
She has her own mind and thinks for herself and knows that she has to be the one who bears the consequences of her decisions