𝖶𝗋𝗂𝗍𝗂𝗇𝗀 𝖳𝗂𝗉𝗌 𝖿𝗈𝗋 𝖫𝗈𝗌𝖾𝗋𝗌

𝖧𝗈𝗐 𝖳𝗈 𝖶𝗋𝗂𝗍𝖾 𝖳𝖾𝖺𝗌𝗂𝗇𝗀 𝖨𝗇 𝖠 𝖱𝖾𝗅𝖺𝗍𝗂𝗈𝗇𝗌𝗁𝗂𝗉

Any relationship teases and jokes without being toxic. As long as that teasing and joking doesn't hurt any of the characters' feelings (only makes them playfully annoyed) and as long as the teasing and jokes aren't frequent or degrading, you should be fine.
Let me give you a few examples from my own current relationship that will help you out:
✎ So, one day my bf's trying to open a jar. He spends like twenty minutes trying to open it before I come in and open it up in five seconds. He insists that he "loosened it up" for me, but now whenever he's trying to open a jar I jokingly ask "do you need help?"
✎ I mispronounce words all the time, and my bf never lets me live it down. I pronounced "stupor" as "stuh-pore" and now whenever I say it correctly he pats me on the back and tells me how proud he is.
✎ I'm literally five foot and the short jokes are bountiful.
✎ We always play Rummy 500 and he's really good but I still beat him That One Time and even though I've never won aside from that I still ask if he wants me to go easy on him.

𝗰𝗿; 𝘀𝗵𝗲-𝘄𝗵𝗼-𝗳𝗶𝗴𝗵𝘁𝘀-𝗮𝗻𝗱-𝘄𝗿𝗶𝘁𝗲𝘀