I think that other posters have raised a lot of good and sensible points about this. Personally I think he is being unreasonable. I don't think the fault lies with you in any way. It's a big thing to visit someone for 6 weeks, and a huge thing to visit for 3 months. Very few people would be able to do the latter. I agree, this sounds like a tantrum. I think you mentioned that you had not yet booked the flight tickets. If I were you, wouldn't book any tickets yet. First I'd take a break from chatting with your friend for a week or 2, then take sometime to reflect on things and then decide whether to go ahead with the trip.