Sorry to be really blunt here, but you sound like a really really needy person and its possibly something that you need to address.
Needing to be texted and contacted all the time when he's on a night out with the lads is not ever going to go down well. He'll be out drinking, relaxing and having a good time, not in the corner texting. If he'd have had an accident, you'd have heard about it by now, and also, if something's going to happen to him, it will, regardless of you worrying and nattering about it.
The whole kissing someone else thing can b overcome, but sounds to me like that's something else that you need to work on. You'll never move on from it if you allow to be at the forefront of your mind every time he's out of your sight. If you genuinely do trust him and don't believe it will happen again, then put it to bed and let it be. If it is still a main concern for you then you need to either address it with him, or end the relationship.
The last thing you'd want here is to smother him so much he runs in the opposite direction. If hubs wanted me to text him every time I was out drinking with friends, he'd have another thing coming. He knows this, and to be honest if I sent him a text whilst I was out, then he'd think something was wrong and would be wondering why I wasn't just having a good time and was in a bar or a pub on my mobile phone??
Sorry if I've seemed harsh but your relationship doesn't sound healthy to me.