good to hear, im 18 and i've been going out with my gf for 21 months, we are both the same age, and in relationships there will always be ups and downs, and times when you wont want to talk to her cause your mad, you just gotta work through that stuff, and by the sounds of it you did
Call me weird but smashing bottles is so soothing when Im in a bad mood. Just hearing the Glass smash is awsome. Also driving my car while blasting some disturbed usually gets it out of my system. The worst thing you can do though is just sit around not doing much and waiting for the call.
I like to get a cutting board and set it up on a sawhorse and smash various large fruits with my sledgehammer.
Lifting weights is a huge releif for me, but if its late i just go out to highway next to my house and just rip through the gears a couple of times.