Washington (AFP) – Singer and actress Jennifer Lopez has announced her engagement to Ben Affleck, 18 years after they ended their relationship for the first time. The 52-year-old posted video of herself appearing emotional and admiring a green ring in her newsletter, “On The JLo.” Her representatives then confirmed the engagement announcement to People magazine. US media reported that the ring was an emerald-cut pale green diamond. “Bennifer” — the couple’s nickname from their first highly publicized relationship — set the internet alight last year when photos of them together again began c…