Fell off the wagon...

So at the start of this year I wanted to get rid of all the weight I gained from a horrible break up years ago, the depressive eating, and having to leave my dream university as a result of it all. I weighed in at around 245 pounds and so far I managed to lose around 19 pounds! However I keep finding myself slowly creeping back to old habits from outside influences from my partner. He means well but it is causing me to eat bad and eating sweets again. I’m pretty sure I regained a few pounds and I want to stop it but I don’t have any support or gym friends or local friends, it makes things a bit of a challenge. 

So im trying to think of ways to say no and get my partner to understand that he is becoming a bad influence (without sounding mean or being a wicked witch about it) and to find ways of connecting with others on a journey of weight loss that I can actually talk/text with.