What does it mean when your boyfriend doesnt want to give you his facebook pasword?

[Tyler]

oh no thats not good. i wouldnt give my gf my fb password either though. we"ve been together for 2 years but i do not flirt with other girls or have an online girlfriend. it is kind of just like a sence of privacy like this is my buisness/facebook theres no need for you to check it, go on yours.also same thing with my phone. i have like no contacts, messages, or pictures i have to hide on my phone but when she or anybody has it i feel very secured about my phone as if i did have something to hide even though i dont. maybe its because a facebook or a phone can ruin peoples friendships or lives. ik my gf wouldnt do that but still the fact that she or anybody can if they wanted to by messaging people talking s**t makes me worried. if she wanted to she can look at my fb profile because we are friends on facebook but i know not the private messages. i guess its because we trust eachother but if you have evidence that he is doing some sketchy stuff you should do something about it like calling him out for it or investigating more until you have cold hard proof.