2- After puberty, due to hormones and genes, some hairs will grow on the skin, which may be more masculine for men, but it may affect the appearance for some women, but after puberty, the "fine hairs" on those faces will gradually decrease or disappear.
3- Keep cheerful and happy, and you will become better with your appearance. If you want to be trouble-free forever, you must do laser hair removal. The price of each hospital is different. Generally, you go to the upper lip moustache 1500/5 times in a big hospital, but I personally advise you not to remove it. Because it's normal. If you and your girlfriend can look at it from another angle, it's normal for men to grow beards.