Me and my bf have been together for around 4 years and I feel like all I have done is hurt him while he has uplifted me. Recently it seems like whenever we are alone I will say something which hurts him, especially today I ended up sayin g  the wrong things twice. I dont mean to hurt him and Today after an imitate moment I said something which I thought he would have laughed off but instead he was extremely hurt. When I hurt him I begin to feel horrible thoughts and I feel like he would be better off without me, even small silly arguments really set me off. It feels like I am constantly saying the wrong things and I dont even know why I say them. I really love my boyfriend but I seem to be constantly making him feel worse about himself even though I dont want that, I try to tell him that I love him each day and how wonderful he is but it seems like these small incidents are starting to happen more frequently out of nowhere. I dont know why this is happening and I want him to just know how much I love him. Any advice is appreciated.