Gained a lot of weight..

I've been steadily gaining weight since high school. I've gained about 70 lbs in 7 years... so unhealthy. I've gained 20 lbs alone since my bf has moved in. I don't have a lot of support at home, because everyone can eat what they want and lead sedentary lifestyles without worrying about gaining weight.
Looking for friends and a support system to help me stay on track and keep me accountable. I'm finally figuring out that I can't do this alone.
I'm a huge science nerd (getting my PhD in chemistry) and I love video games. Lets be friends!