How long should I wait before getting physical?

So I met a guy on Okcupid back in December and we started talking for a couple weeks, things died off but we then matched again on Tinder earlier this month and have been talking again for a little over two weeks. We did go out the other day and things were great and plan on going out again this weekend. I really like him and genuinely feel in my gut that this will turn into something so how long should I wait before doing anything physical with him?