i love my boyfriend alot and he makes me so happy,we are practically bestfriends aswell..but because everything was going so well i started to think negative.I've got it in my head now that something has changed and that something isn't the same. I keep getting alot of negative thoughts that dont seem to go away i also keep thinking 'what if im not in love' etc it all started when my sister broke up with her long term boyfriend and there was alot of negativity in the house,alot of upset and there still is which has gone on for a couple of months,this has made me feel really down,i also took time off college because of stress and was isolated from people for a while,this was when my mind started to think about alot of bad stuff when i was staying in the house ever day,ever since its always been stuck in my head i want it to go away so i can be as happy as i was before it all came into my head! I am forever seeing people on social media breaking up and thinking 'thats gonna happen' etc followed with other what ifs, it did all start when i experienced my sister going through a relationship break up and i was getting very stressed with college work. Ive spoken to my mum and she said it will be anxiety and just me thinking too deep into things. as she sees how happy i am around him! sometimes it can affect how i act towards him though,which i hate:(Everything was so perfect before this stupid thought got planted in my head any suggestions,please?