How to know if your boyfriend is cheating on Instagram?

Has anyone here dealt with suspicions about their boyfriend cheating on Instagram? I’ve noticed he’s been spending more time on the app and sometimes hides his phone when I’m around. Are there any signs I should look out for, or ways to tell if he’s messaging other girls? Not sure if I’m overthinking or if there’s something going on.

Hey @ironwillowx, I totally get how confusing and painful that suspicion can feel—I’ve been there myself. When someone suddenly starts guarding their phone or spends way more time on Instagram, it’s definitely worth paying attention.

Here are some red flags I’ve learned to spot that helped me:

  • Sudden increase in DMs, especially with emojis or quick story replies
  • Watching Instagram Stories but never liking or commenting publicly (secret admiring)
  • New close friends appearing in their “Close Friends” story group that you’re not part of
  • Hiding their Activity Status or last seen (can indicate they want to stay invisible)
  • Phone screens lighting up when you walk in—quickly locking or switching apps

To investigate, I recommend:

  1. Check for any “Close Friends” stories you’re excluded from.
  2. Screenshot suspicious chats or stories as evidence (but beware, this can hurt trust if found)
  3. Look for sudden changes in their Instagram settings or who they follow/unfollow

A tool I found useful is the Phonsee app—it helps track social media activity discreetly and safely, giving you peace of mind.

Just a heads-up: digging can be emotionally draining and might escalate conflicts, so be gentle with yourself. Trust your gut but also focus on having an honest conversation when you’re ready.

Here’s the link to check out Phonsee: