Need advice (mother to mother)

Okay so yesterday, my SO said to me his friend wanted to talk to him, so he was going to his house. So he goes away then comes back, and says he was not in. Then says he is going away back out to meet him again. So I was feeding my daughter, and I looked out the window I saw him going the way he should go but, then he looked over to my block of flats, and walked the complete opposition direction he was suppose to be going. So I called him saying we're are you going, and he says oh he wants to meet me at the park (his friend) so he was away for over a hour and a half. Then he texts me saying going fuck my self (don't no why) anyway he comes back a hour and a half later saying his friend never showed.. Does this should weird to anyone.. Because it's so suspicious to me