1. What do opioids (heroin and prescription painkillers) do to our bodies?

Opioids target the brain's reward system and flood the circuit with dopamine, a neurotransmitter that regulates movement, emotion, and feelings of pleasure.

Heroin's effects on the body can be severe or long-lasting and include addiction, overdose, withdrawal, and serious medical problems

Although painkillers take the place of neurotransmitters on the opiate receptors, they cannot fill all of the neurotransmitters roles.

Explanation:

if your boyfriend is cheating on you, my best advice to you is to dump him, he's only going to drag you down. and if you do, don't fret there's plenty better that know how to treat a person right. i mean honestly, the whole point of a romantic relationship is love, and if you love someone you aren't going to cheat on them. i do believe in second chances, but why would he cheat in the first place? i personally feel that if someone cheats, they ruin any chance they wanted/had with you. i wish you the best of luck with this, hang in there.