Depends on what form of love you mean. For instance, as Eric mentions here there are two directions you can take it: your Ma or your God(s).
Some feel huge gratification in bowing down to an all-seeing 'master of all things', some sense there's more to come from their Ma. After all, who bore you (on average) nine months, kept you going, cheered you up when things went pear-shaped or (not necessarily in your case) your girlfriend told you where to get off, or your wife ran off with the butcher, baker or candlestick maker?. You can't get that in a church - no matter how deeply thankful you feel.
Or how about the loyalty your girlfriend/wife shows when you're in a tight corner? Togetherness blossoms when you've shared confidences, and more. Blood may be thicker than water, but there are some things you can't call on your Ma for... 'Nuff said.
Happiness can be the equilibrium you feel from a fulfilled relationship, and if that fails you might start dreaming that you're at the edge of a dark chasm with nothing to hold onto. That's the 'B' side of any physical relationship. You choose...