PEOPLE
“How long is too long for a friendly phone conversation?”
That varies between friends. Some can go for hours, while for others, a simple “hi” and “hello” would suffice.
However, if you want to differentiate a friendly phone conversation from one with romantic interests, there’s more to look at other than the length.
If you feel it’s already long, especially compared with the average phone conversations you have with other friends, then there might be something other than friendliness.
Other aspects to consider are your topics and how you treat each other in the conversation. If you’re talking about intimate things and speaking with each other in an extra sweet way, then those might be signs that your interaction is veering away from friendly territory to a more romantic one.