You have an early Class 3 pattern of balding which means that as you get older, the hairline will probably rise and the middle section you see now, may disappear. The only way to slow it down or stop it is with the drug finasteride which works well in young men. I know that there is a lot of bad talk about this drug on the internet, but only less than 4% of men get sexual side effect. Far more men either get their hair back or stop the balding completely. At 25, you could also get a hair transplant. I looked into my Gallery on my website and found someone who had his entire hairline moved down as shown below on the right next to your picture which is on the left. This was, of course, a hair transplant, something you might consider.
Two different people are shown above (not a before and after picture)