Do all relationships experience a honeymoon phase, or is it just me?

Friends here with ROCD- I haven’t ever been in a serious relationship, the last time I “dated” was 8 years ago, and I don’t really think I know what it actually looks like to like someone. I’ve recognized a certain cycle that’s happened probably 20 times in my life but didn’t realize how unhealthy it was until this year. This is the cycle: I find a guy somewhat attractive, he either says something or does something small (normal, not out of the ordinary?), my brain takes this little thing(s) and obsesses over it & turns it into this huge deal where I keep thinking about him, stalking his social media, making me compulsive (googling things, asking friends for advice, etc), and making me believe I really like this guy. This has happened twice in the last 3 months. Does this happen to anyone else?! How do you break the cycle, etc? When I’m in the obsession phase, it literally lasts for a week and sometimes makes me physically sick from the stress. Help!

Can any of you with relationship ocd please share your experiences below?? Don't be afraid to give details!!! I want to know your experiences and relate to you guys!!! Mine was when I first told my crush I liked him. A month or two after that, we became official. That's when all the anxiety kicked it and when my life turned upside down. I got lots of ugly thoughts like my boyfriend wasn't attractive, me hurting him or killing him, all these awful ugly things that ruined everything and made me depressed and anxious. Whenever I thought someone else was attractive I would feel so so bad and thought I didn't love him. It was awful 😞 now I just for us on his imperfections and makes me fear he's unnattractive even though he's not. Ugh I wish this would end

I’ve been with my boyfriend for 3 years and he is an absolute angel. All throughout the relationship I would have nightmares and intrusive thoughts “what if he leaves/cheats”. And he would reassure me and treat me like the world revolves around me. Lately I’m realizing this was actually ocd and not anxiety as I had previously thought. I would get paranoid if he didn’t check his messages for a couple hours, I’d get anxious if I saw an ambulance heading toward his street while I was driving, I would ask for reassurance that he loved me constantly. Bear in mind, I have no reason to have these fears. My boyfriend is my best friend and has supported me through thick and thin and he’s amazing. One time a couple months ago I was being a bit snappy with him one night and I had the thought “only people who don’t like their partners are snappy with them” and it just stuck. Now I struggle with intrusive thoughts about my own feelings, do I love him, do I miss him enough, is my relationship going to end because this couple on social media broke up. I could deal with the thoughts about his feelings because he is so so good about making me feel loved but now I’m stuck in this constant guilt loop where I question my relationship for no reason then get anxious and feel guilty for even thinking that way because I think I’m manifesting it. Was wondering if anybody else in a healthy long term relationship has had this happen to them and how you talk yourself down :(