Should i listen to her?

I have this friend...She's NEVER been in a relationship or had a boyfriend or any of that..but she says she has this sixth sense that's NEVER BEEN WRONG. She says she only sees me & my boyfriend lasting a few months, even though he is perfect for me..he makes me a better person, he makes me smile, when i'm sad he knows just what to do, he cares about how I feel, & When I'm with him it feels like a dream & I never want the time we spend together to end. He knows me better than I know me. He gets me. He just knows..But her exact words were that "i don't see yall lasting but a few months, you will get something unmaterialistic out of the relationship though" .. I mean what should I do? Am I crazy for not listening or should I listen to someone whose inexperienced & never even met him. I also don't want to be in a "Temporary Relationship" & I don't want to wonder to myself everyday like .."Is this it?" "Is he gonna leave me?"That would suck. So advice pls?