dont' want to sound thick but what does
IMHO stand for - i know it's probably really obvious !
any way if some suddenly ignores you it says more about them than you and do you really want friends like that any way. That said maybe you should just ask them outright - at least you'll know - they might not even realise they've ignored you - people sometimes can be very self obsessed and in Tenerife people can often come across as very guarded !