No guy suddenly decides they want to be single if he is happily married. So your husband is either seeing someone or you stifled him. Anyhow, as you say, that bio clock is ticking, so you'd better get on it. You can still start again, but understand your options are far more limited than for the hot 20-something year old version of yourself and you need to be all over this like a bad fitting sweater if it's that important to you. Added to your woes, a lot of guys you are likely to meet will be players, cheaters, duds, losers, criminals and idiots. What I suggest is find an older guy (40-50's). To them you still have status of being younger, but you're not as fickle as the 20-somethings they really want but don't have the patience or time for. These guys are smart enough to realise your benefits as they are no longer thinking with their man-parts, are more stable (emotionally and financially) and far easier to be with if you don't try to change them or the lifestyle they have become accustomed to.