Is he seeing her?

Been seeing this guy for 2 months , we’re just seeing how things go before we officially date. He has 2 kids by 1 woman but he claims they haven’t been together since April but my friend follows her on Snapchat and it’s a video from December of him putting a necklace on her no caption . Should I just ignore it or is it a sign he still messes with her . I don’t want to ask him and look crazy .

Help .

Yes we in August but this was 2 days ago she posted a throwback video . No she don’t know my friend got her on there . It’s been years they been added on snap. She thinkn bout him ?? His kids 2years and 7 months