I feel I’ve become to comfortable in my relationship after a year and half of being together.I know the honeymoon period doesn’t last forever and I’ve accepted this however I’ve become too comfortable.I never dress up around him when we go out I put on clothes I’m going to be comfortable In rather than clothes I feel attractive in , I never ever flirt with him , I , I don’t show him that much affection, I’m never in the mood to have sex with him , I don’t tidy my room when he comes over like I used to , I’m not remotely bothered by what he thinks of me eg my appearance or the way I am, I don’t get any sort of exited feeling when Im with him on holiday ect , I feel I’ve become too comfortable and i see him as my best friend rather than my boyfriend which then leads to me to feel strange when we have sex as I feel like I’m having sex with someone I shouldn’t be.However is this A bad thing and should I end the relationship based off this or is it not much of an issue? Because i can’t imagine being without him and the thought of not being together hurts however can I carry on like this ?. I know it’s having an effect on him as he’s mentioned things before however I’ve tried to change some things eg flirting and having sex frequently/initiating it but it just hasn’t worked .