When it’s super casual. Unexpected visits none of the usual boyfriend/girlfriend formalities. Also... don’t be afraid to ask. What’s the arrangement? Do you have another girlfriend/someone else you’re seeing? Can I count on you to be an adult and be honest with me because I need complete transparency? Make sure to communicate your expectations. Don’t assume.

Naive confidence that I'm a good judge of character, can read body language well and have enough self-confidence in myself to leave something like that at the first signs. Also I'm kinda charming :)

You mean "side piece" as in a relationship with a third party involved?

Its a red flag.Avoid myself into this situation

I'm not..... according to something I'm at the centre.

I hope these aren't autobiographical... 🙁 if they are actively hiding parts of their life from you, like if you're not meeting Aunt Susan or you aren't hanging out at their place and especially not sleeping over without an acceptable reason, that's what we call a red flag at Love University