I Have a Question

Ok, I would just like your thoughts on this one. I want to go on holiday this year and I was going to go with my best friend and were planning on going abroad. All good you might think, but she has a Spanish male friend who she fancies a lot, who has a big house in Spain, so we could stay with him and do flight only. But now I am worried... cos I don't want to be a third wheel, and I don't want them to try to fix me up with anybody either.. I have a boyfriend but we have not been seeing each other all that long but I think the world of him.
Am I right to be cautious on this one? What should I ask my friend in order to decide whether to go ahead with this holiday or not?