advice plz lol

am I overthinking badly if I have anxiety from relationship problems from months ago that we’re taken care of multiple times , or problems my man has worked on or apologized on ? Am I only hurting myself by not enjoying the relationship and holding onto problems from the past ? Moments when everything is going beautiful and nothing there is to be worried about , I’m anxious and not enjoying the moment from something that probably happened years ago . Am I overthinking if I consistently thinking about his flaws more than what he does for me or has that makes me super happy ? Am I overthinking if I feel like everything needs to be fixed in the relationship or me or him if something happens ?

I’m happy in my relationship. I don’t want another man I love mine but I feel like I’m having a bad anxiety issue when it comes to typical problems or something? Brutal honesty plz .

Are relationships always supposed to be happy and wonderful and just perfect ?

No abuse in any way , just ugly moments in relationships or heated arguments .