Gaining

I would like to gain weight I am already overweight and I love my body but I want to be bigger however I don't control how much I eat. I have an overweight family so I am slowly gaining but I am a feedee and love when I eat and feel full and see the effects of weight gain. No-one knows about how I feel about food and weight gain they see it as a "growing boy". So whenever I can I overeat to enjoy myself secretly but I want to speed up my gain a little bit. So any advice on what to do would be very much appreciated.

Sneak food into your room and hide it! Eat yourself full before going to bed each night!

This is indeed very effective. Night eating too... I involuntary gained 3 lbs a month since March.

Depending on your finances, maybe find stuff to eat whilst out alone.

Even something simple like if you're buying a coffee, go to Greggs and get a pizza with it (I think it's around £3.50 vs £2 for the coffee alone).

Keep it up, you'll gain plenty.