Search Results: how long to wait before i ask her out again

Okay so I went out with his guy (he's 27 I'm 18 this isn't about that so no judgement please. I'm an old soul.) Anyway we were texting for quite some time before that and he seemed to really like me even then. Our conversations were engaging, we swapped pictures (clean pictures) and he even said he was going on a trip soon and wondered if I would accompany him provided we hit it off like we both thought we would. So he just took me out on the first date and we really seemed to hit it off! We laughed a lot, agreed on basically everything we talked about, lingering stares, compliments, the whole nine yards. Well he went to drop me off and gave me a long hug and when I pulled away we was caressing the skin on my lower back and staring into my eyes. So this made me think that he wanted a goodnight kiss (if we're being honest, so did I) so I leaned in and he turned his face and asked if we could wait on that. I was a little embarrassed but I said sure. He assured me that he wanted to see me again and I went inside. Well he began texting me that night again and apologized for the rejection but if he'd let me kiss him, he would've wanted more. Then he asked if I would send him a dirty pic. I'm not comfortable with that and I told him that. He said he didn't mean naked he wanted one in my underwear. I said no to that too. I texted him a couple days later and we did some small talk and outta the blue he asked me if I would send him a pic of me in a bikini. Oh and this guys whole thing is that he's looking for something real and that he wants to get married soon and have kids. I don't know I'm just feeling kinda pressured and not sure what to do about it. So I guess my question is: do you think he's just interested in me for my body or is there still hope that he's actually a nice guy. Thanks for reading through all this :)