What to do about my bff ?

Ok so , I have been friends with my friend for 4 years. I recently got married to the love of my life. My friend was one of my brides maids in my wedding. Whenever my friend comes over to hang out with me it seems like she is flirting with my husband. She laugh at him all the time. She always looks at him. Its starting to make me mad. Idk if she likes him but it seems like it. Is it just me ? What should I do about it? Idk what to do plz help thank you