Reuniting with old friends during Pride week.. Inappropriate?

My city's pride festivities happened this week, and I have a few questions concerning the actions of a couple old friends and acquaintances I bumped into during the festivities:

Firstly, I am a very laid-back guy who doesn't really get riled up on other people's behaviour. I like to believe that I maintain a cool disposition during most of my life.

I was in the beer garden (where the mature festival go-ers retire after browsing the pop-up market) sitting with a couple friends and my boyfriend. I bump into an old acquaintance (A) and a family friend (B) there who proceed to do the following:
(A) Is a mature friend of mine, 30 years my senior who I used to have regular pub chats with. Haven't seen him in 2 years. I introduced him to my boyfriend, and he asked for my digits which I gave to him. He also asked to catch up for talks for old time's sake. He left me alone after that and stopped by to say goodbye right before I left the festival.

(B) I grew up with and have always treated him like a little sibling. My boyfriend knows that, and I've told him stories about us growing up. I saw him and gave him a tickle and a hug with some greetings, and he came back to my table to catch up briefly. (B) is hilariously outspoken and loves the scene, and unsurprisingly denied the chair I offered and sat on my lap instead, whilst I'm next to my boyfriend (at whom I look at with a look similar to a tourist seeing a local busker for the first time).

Is this stuff weird? I don't want to make my boyfriend think I'm going to run away with these people. My assumption is that Pride makes (B) super excited and I guess kinda flirty? He knows he won't get anywhere with me. I kinda feel bad about my boyfriend seeing how these people interacted with me, but I can't help that they want to say hi to me.. right?