About 6 months ago, my cousin invited me to a party a Jewish organization she belongs to was having. I had nothing better to do so I went. I met a guy there and we spent some time together afterwards and began dating 3 months ago. We have gone on 7 official dates. Last weekend, my cousin commented on how nice it is that I am dating a "nice Jewish boy." It was only then that it hit: me being Jewish is probably a major factor for him.
THE PROBLEM: I'm not Jewish. I was raised in a Jewish family, but about 7 years ago, I stopped observing Judaism. It was a personal decision that was based on some feelings I have about religion. I basically do not want to belong to one. I do not consider myself Jewish or observe Jewish holidays, traditions, customs, etc... I am a very spiritual person who believes in G-d and I pray to Him at least once a day. My family has no idea that I "gave up" Judaism. I just pretend with them that I am still observant.
The guy I am dating is Conservative Jewish and really passionate about Israel. He lived in Israel for several years, is involved in pro-Israel activism and visits Israel every year. I don't know how to reveal to him now that I'm not Jewish since it's been 6 months. He obviously assumed I was since I was at the party and it never occurred to me that me being Jewish might be a major thing for him since religious affiliation in a guy I'm dating is such a non-issue for me.
What do I do now? I have no idea how to tell him after all this time.