<human>: Can you provide a brief rundown of the text in within 3 sentences?

So look I know we are just teenagers and the chances of us still being together after college are slim but what her father said is something that took me by surprise.

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So the story:

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Tonight my girlfriend texted me sounding somewhat distressed saying we needed to talk. So when I walked into her house she instantly took me up to her room without a word. When I asked her what was up she just collapsed onto her bed crying and said that her father told her she couldn't marry me even after college because she "Needs to date other people in college".  instantly just fell onto the bed speechless. I mean, I understand wanting to see other people in college but she has never expressed any interest in other people. I instantly felt like I was in her way. Like she was bound to meet someone better and I would be tossed aside. The worst part was her father told her to tell me that. I thought he liked me. We get along really well too. She told me that immediately after that her mom said that if we didn't work out she would need to find someone like me because I'm the best she's had. I'm by far not her first boyfriend so I'm confused with her fathers reaction.

The problem: I don't know what to do now. I feel like there's now an expiration date on our relationship. I feel like someone better for her is out there and as soon as they meet I'm out. She has expressed that she doesn't want to leave at all and that she is extremely happy with me. How do I continue on knowing that her father doesn't think or even want us to make it.
<bot>: My girlfriend's father wants her to date other people in college. I don't know how to react because I feel like there's an expiration date on our relationship now. I don't want to hold her back though.