Guys who doesn't respect other people's relationships are players. They just don't care or respect boundaries even with their own girlfriends. The only way he can mess things up with your boyfriend is if you let him and pay attention to him.
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