Girls, Instagram opinions on liking pictures in a relationship?

Honestly, instagram doesn't bother me i don't care who likes what or whatever. My girlfriend makes me feel crazy for liking an innocent pic of friends that happen to be girls. She says "it's flirting" yet she posts selfies all the time and body pics and guys always like it. Again, i dont care what she posts or who likes it but she is literally about to break up with me for good "because of my social media behaviors." Is liking a girls pic while in a relationship flirting and disrespectful to a girlfriend or is she just bat shit crazy. Serious opinions. We're also both 23. What should i do about it? If it is disrespectful do i adjust to her feelings or do i fight for what i think.
Girls, Instagram opinions on liking pictures in a relationship?
Post Opinion