You have your whole life for startups. Indulgence in love is mostly limited to your 20s. I would suggest enjoy the chemistry till it lasts - startups can wait. The chemistry will bring you more happiness then any amount of big company building would.

Destinations are always pointless, its always the journey. Think of this as a detour from your startup life. In the longer run, detours will give you valuable perspective and make your journeys more meaningful.