Should I shag the 25 year old

Nah, leave this one. If you really wanted to you would just go ahead. Wait until you’re sure.

It's not the age difference, it's the age itself. Mid-20's is a child in my eyes. I'm the same age as the OP.

I am 19 and the person I am seeing is 25 so it feels weird that someone your age would be interested in my boyfriend got to watch our backs

So you're okay with a six year age gap but not a ten year one? What's the cut off point? And how do you feel about the fact that many on this thread would call your boyfriend predatory and icky for shagging a teenager?
Also you do realise it's unlikely that it's your boyfriend specifically she's looking to shag?

The 25 year old approached her first.

That was me.

Wtf?

I don't know many (any?) 25 yr olds who cold approach older women in public who aren't following pua.

That's totally besides whether op should shag him or not.

It just means ...she shouldn't feel he's emotional or it's isolated for him.
And she should Def use condoms.

Have you seen many 20 year olds recently they absolutely don't look like grown men

Without this pinging back and forth pointlessly, yes I have and of course they look like adults because that's what they are? Don't mistake looking young for looking like or being a child.

Have you seen many 20 year olds recently they absolutely don't look like grown men

I am 19 and the person I am seeing is 25 so it feels weird that someone your age would be interested in my boyfriend got to watch our backs

How about a middle ground where you get to know him a bit more and decide down the line.

You are under zero obligation to shag him.

If he doesn't want to meet up without sex being on the agenda (immediately) then ...

Crazy. What business of yours is it who your adult daughter has sex with? What if she fancied the 35 year old and had chatted him up with a view to having sex with him? And had a bloody good time in the process?

Ignore the person saying that, they are probs jealous!

My DD is not much younger than that and I’d be livid if a 35 year old man casually shagged her. Like a piece of meat.

Your DD is presumably capable of giving her own consent and it's not your business though?

My DD is not much younger than that and I’d be livid if a 35 year old man casually shagged her. Like a piece of meat.

If your DD approached a man, swapped details and made it clear she'd like a sexual encounter with him .... How would he be shagging her "like a piece of meat"?

Just as a matter of interest, what age difference do you not feel is gross?

But 20 year olds look like children did you go to his mum and dad's and squeeze in his single bed under his spiderman quilt.

That's such a creepy thing to say.
Btw 20 year olds are adults, and look like adults.

Ar the risk of sounding like a prude, no, I don’t think you should.

My DD is not much younger than that and I’d be livid if a 35 year old man casually shagged her. Like a piece of meat.

Maybe do some online dating and find someone else more suitable?

Also if he’s that up for it, how many others has he shagged? It feels a bit icky.

If he gave you his number in a public place, I’d be very concerned about how many people he might have shagged (like thousands) and therefore what stds he might have. Protection isn’t foolproof.

Yes. You should.

Poor boy?! He's 25 not 15. How ridiculous.

Exactly this!

Now I find this gross. I think 25 is borderline. But 20 year olds look like children did you go to his mum and dad's and squeeze in his single bed under his spiderman quilt. At 34 are you really attracted to a 20 year old

Go for it. Casual sex can be amazing.

There are very few men of any age who "cold approach" total strangers and swap numbers or SM. He's probably in the pua community.

The difficulty is, you said "yes" to his number. You glean far more information about random men who approach you in the street if you say "no". It tells you how they react when they hear a "no" from a woman. 9 times out of 10 it's never good, and that's in public let alone in private.