well i needed a place to keep my betta for a few weeks so my boyfriend happily let steve(my betta) stay at his house for a while he actually wanted to keep him too.he was put in a 5 gallon tank where i thought he would be taken care of.well a week passed and i went into my boyfriends room and saw my betta next to the window which i didn't like because it is really cold out and he normally keeps his window open my boyfriend quickly moved it and i considered it a minor mistake and let it go, well after a few weeks i kept asking my boyfriend if he was doing ok and if he was getting fed enough and all the basic needs were met. well i just went to his house yesterday night and the fish was in terrible conditions, the water hadnt been changed in days, there was no food and he was left next to the window again!!!!!!!! i was so mad i could have killed him. i made him do a water change and feed him right infront of me and said he was coming home with me tomorrow. well i just found out my betta is now dead....im seriously considering leaving my boyfriend because i am terribly upset....i made a bad mistake and should have taken him home that night but i didn't and my fish paid the price .