[General] I can bring a friend each time.....

[Silverobama]

The following conversation was between David and me:

David: I haven't seen you for a while. Are you keeping fit? (He saw my photos of going to a gym)
Silver: Yes. That gym also has a pool.
Daivd: Wow, that sounds great.
Silver: I can bring a friend there each time when I get there. Feel free to let me know if you want to come along.

Are the italic sentences natural? I tried to send an invitation to David because he also likes exercising.

 

[emsr2d2]

The following conversation was between David and me (that's very clear without this explanation, although someone called Daivd seems to have snuck in):

David: I haven't seen you for a while. Are you keeping fit? (He [STRIKE]saw[/STRIKE] had seen [STRIKE]my[/STRIKE] some photos of me [STRIKE]going to[/STRIKE] at a gym.)
Silver: Yes. That gym also has a pool.
David: Wow, that sounds great.
Silver: I can bring a friend [STRIKE]there[/STRIKE] each time [STRIKE]when I get there[/STRIKE] I go. Feel free to let me know if you want to come along.

Are the italic sentences natural? I [STRIKE]tried to send an invitation to[/STRIKE] wanted to invite David because he also likes exercising.

Note my corrections above. Both "bring" and "take" are possible in the last line. I'd use "take" but the offer you're referring to is often called "Bring a friend".

 

[Rover_KE]

No.

I can take a friend [STRIKE]there[/STRIKE] each time I go.

 

[Charlie Bernstein]

I'd say, "when I go there." You can't wait until you get there to bring someone.