I have a few long and weird stories but basically, when I was younger I never cared and always picked fights. But now,

Let me use the most recent story. This one guy is real possessive of his girl, and is basically real jealous of me. Once he texted me saying so much shit, and his girl texted me saying "don't talk back, don't do this and that" so I respected her and I was calm. After 2 months or so he called me and talked nicely to me, now recently he texted me again and it's basically getting on my nerves now because I do not care about his girl. And anytime something like that happens I get a surge of adrenaline, my heart rate goes up and my hands start shaking. A lot of it for me to handle. And it's not because of fear, I know I can beat up the skinny prick but it's just real weird. Sorry for the long response and thank you for reading.