Is it normal to expect a break up shortly after getting into a relationship?

Let me explain what I mean. I was just talking to my bff and she has a boyfriend. They haven’t been together long and she’s already expecting him to leave her, and here’s why: She has PCOS and can’t have kids. However, she has been going to a specialist to see what she can do to make it possible. Unfortunately, no luck. I get it’s really devastating to her, but is she already planning to end her relationship? And she already talked to her boyfriend about this and he tried to reassure her he won’t leave. But, she doesn’t believe him. Like I said, they haven’t been together long, but what do y’all think? Is she already planning to end their relationship?
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1 y
She’s super happy with him and wants a future like getting married. But, she does not see that happening. Also, she told me he wanted a vasectomy but she told him no in case he breaks up with her and finds someone else.
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1 y
I’m honestly lost for words here.
Is it normal to expect a break up shortly after getting into a relationship?
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