Have you ever assumed your partner might be bi sexual?

Say your partner made a new friend of the same sex and all of a sudden this new friend is pretty much becoming more of a priority than you are , you notice the friendship is different than their other friendships , Like a little to close for
Comfort like they been these best friends for years, but they only knew each other a short period of time and making all these plans to go away together not including you , When they are away together they drop in to check on you and say they miss you , Would you feel they were being up to no go and just trying to sugarcoat what they are really up to? I know some people need space and feel space is a good thing in a relationship , As for me I think opposite , I don’t need space from someone I choose to be in a relationship in , I am not saying I have to hold her hand at all times but I would never plan a trip without including her. Would you stay in this type of relationship or move on from them and find someone else that doesn’t want to exclude you?
Have you ever assumed your partner might be bi sexual?
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