My friend made an I Love You box for Valentines for her now-husband when they were dating.
She wrote all the little reasons she loved him on slips of paper and put them in the box. Last I spoke with her about it she will every now and then add a few here and there. She said he still will pull it out and go through it periodically.
Seems cheesy right? And if you asked most guys if they would want that you'd get a resounding NO! But, I think everyone enjoys being reminded of all the little reasons someone CHOOSES them.
I'm sure someone will tell you to buy the Five Love Languages book - seems to have helped a lot of people. Not me, so much. Honestly couldn't figure out which one my guy was - seemed like he needed all of them - no one more than another...
As examples of the above: I will sometimes pick up something here and there at the grocery store as a special treat for him and he really enjoys that - does it for me, too. He also REALLY loves for me to tell him how much I appreciate how hard he works for us and our family. He sometimes really enjoys cuddling and affectionate touch, and sometimes doesn't. He loves it when I offer to happily run errands for him that he doesn't have time or doesn't want to handle. It's all a jumble for me - but those are also examples of what I do to remind him how much I love him.
Granted, I don't do it often enough...
Oh - and you might be surprised how much he would feel loved if you TRIED to cook something he enjoys - even if you end up burning it!