What is selfish about it and why is it stooping so low if they liked your cousin and want their daughter to get married to him ? Why did they need your permission to go to their home for this purpose ? I do not understand why you feel left out, cheated and humiliated about this rishta asking process ? Since when some being nice and cordial to you and your mum become buttering ?
Lol. Did you just translate my spanish into your english? just kidding.