What others provide can only be used as a reference, just like I like the eau de toilette used by BOSS Selection white-collar workers, especially its green grass fragrance and floral notes, but the characteristics and preferences of your BF are not necessarily the same as mine, so what I like and recommend may not be suitable for your BF.
If he is energetic, motivated and loves sports, you can consider giving him BOSS IN MOTION dynamic men's eau de toilette. Just from the shape of perfume bottle, you can already feel that kind of movement, and BOSS IN MOTION belongs to oriental tonal perfume, which is quite suitable for orientals.
If he likes traveling and riding motorcycles, David Duff's Adventure Rider Men's eau de toilette is a good choice. It contains exotic Peruvian cedar and refreshing vetiver, mixed with moist white musk, which is very unique and modern.
If he likes surfing, swimming and other beach activities, or simply likes the seaside, then he can also consider Bvlgari AQVA Ocean Energy Men's eau de toilette, which exudes the breath from the ocean, fresh and full of vitality.
If he is an elegant sven boy, you can consider Ermenegildo Zegna Essenza Di Zegna men's eau de toilette, which belongs to fresh citrus tones and is very suitable for elegant boys with a simple but elegant bottle.
If he is only 23 years old, but his personality is mature and steady, then Giorgio Armanimaniya men's eau de toilette will be a good choice. Its woody floral notes exude a calm atmosphere, and the flat oval foggy glass bottle design is also very textured.
If he hasn't used perfume before, HUGO BOSS's eau de toilette for men is a very good entry perfume. Its orange moss and fruit fragrance are bright and comfortable, and the fragrance is not too complicated. Suitable for entry-level users of perfume, its unique military kettle shape, if your BF has received military training before, has a strong personality or likes being a soldier, it will definitely be better.
Your BF belongs to that trait, and you must have a score in your heart, so you can choose the perfume that suits him according to his characteristics! But I suggest you try the perfume at the counter first, and don't buy it online at will. If you don't like the perfume you bought or can't stand the smell, won't you bear the pain yourself?
Finally, there is a suggestion: you can buy a small bottle for the first time. Maybe you are worried that a small bottle of perfume may make people feel at home, but unlike other things, a large bottle of perfume is not necessarily good. When spraying perfume or pouring perfume, air will enter the perfume bottle, and the fragrance of perfume will begin to deteriorate after being exposed to air or even sunlight for a long time. Therefore, for novices who don't often use perfume, a large bottle of perfume is not a wise choice.