All 3 of mine are like this, it's just part of the happy little personalities.
I laugh at Yogi, at the dog park sometimes he gets a little overwhelmed and will simply go
sit on the nearest feet. Doesn't matter who's feet they are, he's going to sit on them. The person usually looks down and then around for this odd dogs owner. I'll come over laughing, saying, "Yogi, stranger danger, how many times do I have to tell you." They'll laugh and Yogi will look up at us, "But Momma, I was scared and didn't know where you were." He's such a trusting little soul.