First of all, he must be implying that you are not at work, suggesting that they are not at work and have no income, so although they are good-looking, they need some income.
Secondly, even if you look good, you don't have income if you don't go to work, and you are flawed and imperfect. No matter how good you look, you can't last long.
Third, as a college student, it is normal not to go to work. I can only do some part-time subsidies and some daily use. There is no need to say that I was rejected by him. On the contrary, he is unreasonable.
Finally, we should be brave and confident, because we should pay attention to study while studying and work hard at work. Everyone's life stage is different, and he also goes to school. Everyone has a stage of working and going to school.
In my understanding, it means that college students don't study when they go to work. This is a normal thing. There is no need to say it, but it is more melodramatic.