Have you ever had a crush on someone while you were in another relationship and then dated that person once you and your ex broke up?

The person I'm currently dating and I have had things for each other for ages but I was in an on-off relationship with someone else. And they also had another girlfriend in that period. But last year we had sex with each other and it rocked. Now we're together and it's fucking phenomenal and I hate that I wasted so many years being miserable with my ex when I could have been happy dating this person.