My boyfriend and I recently lost our virginities to each other. We've been having sex for a few months, but he still doesn't last that long. I never come from intercourse, and I think that us coming at the same time would be something we'd both enjoy. I would like to use a vibratior next time we have sex. How can I make this suggestion to him without hurting his feelings? I don't want it to seem like I think he isn't good at sex.