HELP!

I've Been Stressed Out Lately With My Boyfriend Just Really Been Tired Of Talking And Arguing So A lot Of The Things He Do Which Isn't Bad I Tend Not To Worry About, So Earlier When We Were Otp His Phone Kept Buzzing And I Ignored It Because I Usually Ask Him "Who's That Texting You" But This Time He Asked Me "Are You l Gonna Ask Me Who's Texting Me" And I Kinda Found That A Bit Strange! Can It Be A Sign Of Something?