So my boyfriends kind of being an -head. How do I guilt trip him?

We've been going out for 7 1/2 months. Things are usually good but loves like a roller coaster and sometimes it swoops down for a little bit but then it always goes up. He left to go visit his brother who lives out of town for 10 days, which means he'll be gone for like another 2 days. Right before he left things were really good but when he goes there he is almost always unreachable. A couple days ago I was missing him really bad and he doesn't have a cell but he can text and he texted me that night. I told him I loved him twice... he never even said it back and was being a little rude/ insensitive about a couple things and i was upset so i told him goodnight then I went to my room and cried myself into an asthma attack and ended up ping out on my bedroom floor. The next day he was on FB and everytime I messaged him he messed with the settings to make it look like he was offline and he has avoided me since. How do I guilt trip him? Oh and for the record I usually do things like bake for him and get him/ make him little presents and im 16, and he's a few months from being 18.