Completely and entirely normal. Nearly everyone else does too, particularly at 19. The people who say otherwise are liars or delusional. It's not pedophilia or even seriously actually hebephilia, with pedophilia being attraction to prepubescents and hebephilia being attraction to super underdeveloped pubescents. The liars oftentimes say it is pedophilia or otherwise they will say it is hebephilia, but they are wrong in both cases -- it's just normal.
Technically it's called nonexclusive ephebophilia, but the large majority (~80%) of males are nonexclusive ephebophiles. The 20% who aren't (the bulk of which are exclusive teliophiles having attraction only to ~16+ or ~17+ year olds -- with minorities of them being exclusive hebephiles, pedophiles, or other such things, who are more likely to be aware of this) oftentimes don't realize that they are actually abnormal, seeing as the feminist rhetoric pretends as if they are the only normal males, and nearly all females buy into it. So, nearly 100% of females and nearly 20% of males think it is abnormal, but it's actually normal as about 80% of males feel the same way.