I'm sorry! an Open Letter to my fiance, David. :(

Sometimes I wonder why my fiance stays with me: mean I never wanna cuddle/love on him because I am either hurting or it tickles (I'm really ticklish); I am always on my phone/computer/or tablet(The same things I got annoyed with my ex over- not spending time with me), then I get angry at him for the stupidest shit. Tonight I lost my anger with him over a joke.
We had been "play- bickering" before the "joke," and I guess I was already a little irritable from that and then he was teasing me because I had deflated my helium balloon from my birthday and had sucked the helium and he said "you already act like you don't have any brain cells. You killed them all." That is a trigger for me, because I already feel like I don't measure up because everyone I graduated from high school with has already gotten multiple degrees or have careers and I just have associates under my belt, struggling to get my bachelors, and I struggle very badly with math; So when he said that I lost it. I got so mad, I threw a can at him, I don't even remember what the can was, maybe it was canned Air that he uses to spray his computer to dust it- I don't remember, but he got his feelings hurt and lashed out at me for it and I totally deserved it. We made up now, but still I feel so guilty about It. I mean all he does is try to love and have fun with me, and I take things the wrong way. He cooks for me, he helps me when I am hurting, he even started a go fund me for my surgery. He just says stuff without thinking sometimes He's human and flawed like all of us, but at heart, he is a good person. I do love him, but my anger, anxiety, and depression get the better of me. I will continue to try to do better in the future, David, and I am so sorry. :(

Love,
Jamie <3