What sign can you not shake?

For me, it’s always another sagittarius. Something about a Sagittarius man will forever drive me crazy. My two are December 1 and 20. And the 20th I have been stuck on him since 2021. I have since had like 3 boyfriends and he has a girlfriend that he’s been with since 2022 and he still has texted me over their 2 years together. What’s your sign that you’re stuck on?