Does marijuana produce serotonin?

My girlfriend tells me she uses marijuana to calm herself if she is having a stressful day. She has been doing this for many years. She says smoking pot is like self-medicating — it is better than using anti-depressants. She also claims smoking pot helps with depression because of how it helps produce serotonin in the body. What is serotonin and how does it help depression? Does smoking pot really help with managing your anxiety, depression, etc.?


If someone's sexually adventurous, does that mean they're more likely to cheat?

If my wife is sexually adventurous, does it mean she's more likely to cheat? My wife is slowly opening up to me about how sexually adventurous she wants to be (I'm talking bondage-type stuff), and I'm afraid that maybe she might cheat in the future if her "appetite" isn't met. I haven't voiced any of these concerns, I've been completely supportive of it and actually would be completely ok with doing all of it. I just worry that maybe the adventure-ness might be a sign of promiscuity?