I been having sex wit a chick I knew since highschool, I'm a grown man in my 40s now. And she's still my friend wit benefits. Over the many years we been together, hooking up, we've done it all, even had 3 sums wit other chicks. But in the last couple months I notice a change wit me sexually when it comes to her. And that change is 'I can't get a full erection, n when I do, I ejaculate fast'. I assure you it isn't anything medical because I still sleep wit other women n she is the only woman I have this issue wit. Does that mean, I'm gettin tired of her? Has our friendship developed to a point to where I don't have intimate interest in her anymore? Or is it that over the years I fell in love wit her, n now I want to satisfy her so bad that I get so nervous it causes me to miss the mark? What y'all think.