<human>: My boyfriend and I have been together for nearly 18 months and things are great. We hang out a lot and are pretty much best friends, but I get so so so jealous at the smallest things. I'm absolutely terrified that he will leave me for someone else and that has caused me act a bit crazy. I always think that he's looking at other girls or having very lustful thoughts about them. It's caused many arguments between us and he gets very angry about it. It makes me feel quite depressed, and I feel like I'm starting to annoy him a lot of the time. He is a great boyfriend, he calls me beautiful everyday and cares for me a lot.

The jealousy I feel is very intense.  He was texting a girl the other day, and I asked who he was talking to, but he became very blunt about it because he knows how jealous and crazy I can get. I literally started shaking because I felt so threatened by this girl...

I have never had this problem before with previous boyfriends. 

I don't really have a lot of friends so I don't know who to talk to about it. I feel quite alone and helpless. Is there anything I can do to stop having these intense feelings of jealousy or even control it?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: I (18f) get very intense feelings of jealousy and it's caused countless arguments between me and my boyfriend (20m). I need advice on how to control it.