Need help with what i should be eating in a day

[Felverick]

I started working out with a trainer back in the begining of january. I've added defination, especially in my stomach, but i'm not really gaining anything. I generally eat pretty lightly and healthy. however he has been pushing me to eat more. I like to eat extremely healthy and i do worry about adding bodyfat. That simply isn't an option. I've been somewhat impressed with the results im getting but its not enough. So i'd like help coming up with a static diet. I want to eat the same things every single day. I don't really care about taste, im pretty open with foods. I do the typical eat every 3 hours sorta thing. I have whey protein but i do like to eat alot of fruit so keep that in mind. Any help appreciated!