Tell yourself just how smart, kind, attractive, and funny you are if you ever get down on yourself because of this situation. [1] X Research source

For instance, if your friend asks if your boyfriend is joining when the two of you make plans, you could say in a joking manner, “Why? Am I not fun enough for you?” This lets the friend now that you are aware of their constant desire to be around your boyfriend. You could also make your friend know to back off by showing affection to your boyfriend, particularly if they are flirting with him right in front of you. You could smile at your friend and then plant a kiss on your man’s cheek. This will definitely send the friend a message. [2] X Research source

You may want to be concerned if they stop talking or they move their bodies away from you.

For instance, remember to say “we” a lot when talking. Instead of saying something like, “I really like that restaurant, say “We really like that restaurant. ” Talking about what you do together can remind your friend that you and your boyfriend are united. [4] X Research source

For example, invite your friend out to coffee and say, “I’m just wondering if you have feelings for my boyfriend. Some of the things you do and ways you behave make me suspicious. ” Your friend may get their feelings hurt, but it’s better to know. [5] X Research source

For example, you can say, “I’m not sure if you’re trying to be funny or if you don’t realize you’re flirting, but it’s making me uncomfortable and I want you to stop. ” Try to say this to them when you are alone. Making a scene in front of people will only make the situation worse. [6] X Research source

You could say, “Do you think my friend has feelings for you? I feel like I am seeing signs of it, but I’m not sure. What do you think?” Take what he says to heart. However, look for signs that he may also be into your friend and is hiding it. These signs could include lots of eye contact, text messaging, finding excuses to be alone with your friend, and acting differently when around them. [8] X Research source

For example, your boyfriend may look at you with widened eyes when your friend talks to him or acts inappropriately. He may also turn his body away from them and towards you when the suspected flirting occurs. [9] X Research source

For instance, you could say, “I love that you and my friend get along so well. However, I’m not comfortable with how you two act when you’re around each other. It makes me concerned that something else may be going on. ” He will likely change his behavior if he truly cares about you and wants to make you feel more comfortable. It may be a sign that he enjoys the attention and likes your friend if he isn’t willing to stop. [12] X Research source