There are several causes for this, but we cannot generalize. Some possible explanations include:

1. they like her but not enough to commit to her.
2. They like her so much that they don’t want to lose her, therefore they keep in touch with her.
3. They want to meet different ladies and want her to be the one who is always there for them when they need her.
4. They believe that if they demonstrate their devotion for her and attempt to commit to her, she would reveal her true colours, which is why they do not commit.
5. They are uneasy and want her to initially commit to them.
6. They are addicted to her *** and want her for themselves.
7. They become tired of her because they’ve known her for so long.
8. Because they don’t want to feel bad, they speak to her in a private manner.
9. They are so desperate that they don’t care with whoever they hook up.
10. They want to “discover themselves” with her by cheating on their girlfriends.
11. They believe they are going to marry her.
12. They are dependent on her.
13. They want to make a good impression on her because they believe they have a shot with her.
14. They can’t quit flirting with her.
15. They are head over heels in love with her.