Most Helpful Guy
Being a model doesn't really mean anything and you prize your virginity way too much. That attitude where you presume yourself so valuable for whatever reason is really unattractive. It seems perfectly possible (if not likely) that he really just doesn't like you for you.6
Most Helpful Girl
Some people value virginity a lot. Some people don't value it.
Maybe he just lost interest in you as a person or as a potential romantic/sex partner. Plenty of people look for more in a partner than just physical attractiveness and virginity.2