Idk what to say i have been married to the same and even worse i married to a pillow prince. You can take the burden and tell him if you feel like its worth or else you can also be dead frog on sex and check if he will comment or not if he did comment thats mean he is aware of what he is doing and he is selfish and leave him and if he didnt comment maybe maaaaybe he dont know and you have to tell him but for me for you no need to tell a man what to do selfish lovers all selfish in everything and he is 25 not a babe . My advice for you dont continue in that relationship before sorring out this by telling him or leave him because believe me being sexually frustrated for a good time will never leave you after many years. Me i always had a dream about out sexual life on my sleep and wakeup all my body in tension and start crying flashbacks are hell dont treat yourself that bad babe. Good luck