She wants to take a weekend trip with an engaged, platonic male friend; says I should trust her. Would you?

We've been seeing each other for a few months. She has a DJ friend who's traveling to another city. He offered her to come along.She asked me how I felt about it and reassured me that I have no reason not to trust her. She wants to take advantage of this opportunity to travel and meet people but promises not to do anything to hurt me. Would you trust her?