I applied to a internship with this company. They got back to me today, saying that they were very interested in having me work for them over the summer. The thing is, I already accepted another internship for the summer. I have a similarly qualified friend who is still looking for a summer internship.
Is it bad form for me to politely notify them that I cannot work, and to also suggest they get in contact with him? Is attaching a resume too forward in this scenario?