Thinking of the name [name_u]Hadley[/name_u] for a boy but is it too similar tonour first boy [name_u]Arley[/name_u]? 
I think the first sounds are different enough that they work
To me they are. Half their name is the same, sure not the half where the emphasis isā¦ But still to matchy for my taste. Good luck.
Iām afraid theyāre a bit samey for me. The -ley ending is quite a noticeable feature and it feels a bit deliberate.
[name_m]How[/name_m] about [name_u]Hayden[/name_u], [name_m]Holden[/name_m] or [name_u]Hollis[/name_u]?
I agree with previous posters, too similar for me. I love the suggestion of [name_m]Holden[/name_m]. Otherwise something like [name_m]Callum[/name_m] or [name_m]Wilder[/name_m] has the same sort of feel to me, and go really well with [name_u]Arley[/name_u].
Yeh the āleyā ending for both is the reason ive taken it on and off my list a few times. But i keep coming back to it cause im really strugglingto find other names i like.
Thank you for replying 
The other name suggestions arenāt really my style though.
Thinking its coming off the list now. Back to the drawing boardā¦ [name_m]Wilder[/name_m] is a cool name not one that i think I would use. [name_m]Holden[/name_m] I couldnāt use due to the car association (very bogan where Iām from) [name_m]Callum[/name_m] is nice but a bit to common for my liking.
Thankyou so much for your reply
That was my worry, thanks for the input
[name_u]Arley[/name_u] is cute! [name_u]Hadley[/name_u] is definitely similar and personally I would probably get tongue tied. However, theyāre different enough I wouldnāt judge using them both.
Some ideas:
[name_f]Briar[/name_f]
[name_u]Cassidy[/name_u]
[name_u]Clancy[/name_u]
[name_u]Duffy[/name_u]
[name_u]Emery[/name_u]
[name_u]Flynn[/name_u]
[name_u]Guthrie[/name_u]
[name_u]Jem[/name_u]
[name_u]Jory[/name_u]
[name_u]Kit[/name_u]
[name_u]Linden[/name_u]
[name_m]Quimby[/name_m]
[name_u]Rory[/name_u]
[name_u]Sasha[/name_u]
[name_u]Seeley[/name_u]
[name_u]Teagan[/name_u]
[name_u]Tierney[/name_u]
[name_m]Wiley[/name_m]
For me they would be too matching as first names. I generally avoid matching beginning or end sounds in the first name spot (matchy nicknames donāt bother too much though since itās more casual). If the matching -ley endings donāt bother you then donāt let me stop you though! Some people like their childrenās names to be matchy.