<human>: Like the title says, but worse. I (Katie) am in a happy, long-term relationship. Happy except for the minor detail where I long for my ex boyfriend (Robert)  and am always on the lookout for him. I haven't seen him in almost eight years, and he is always on my mind. If I see a vehicle that is the same model as his, I will have a gut-wrenching moment, hoping it's him. I see the same model of car every day, several times a day. Sometimes when I get ready in the morning, I will make an extra effort to look nice in case I bump into him. I want a rom-com moment where we see each other on the street and start talking for hours. I know this is crazy, because I haven't seen or interacted with him in about 8 years.

He was my first boyfriend and first love. We dated from ages 15-20, breaking up 4 or 5 times in that span. I was always the one to leave him. I was completely mad about him, too passionate. He loved me, I know, and felt strongly about me, but he was always trying to find himself. He could never prioritize me, so I would break up with him and always say, "call me when you'll put me first." I would go 6 months broken up and call him up to try to get closure. Closure always ended up with us back together.

It is not fair to my serious boyfriend, who has no idea I am so crazy. If I could take a magic pill to forget my first love, I happily would. If the tables were turned, I would be furious and hurt. I feel terrible.

I have tried to think about him as a good, life experience. I have tried to hate him. I don't want to get back together with him. I want to forget him and stop being so obsessive. He is in a serious relationship with someone else.

How do I get over my first love?

Summarize the given text in a few sentences.
<bot>: I can't get over my first love, who I haven't seen in almost 8 years. I am in a serious relationship with someone else and feel very guilty.